when?before since,after,when before的区别
\u5728\u4e00\u4e2a\u53e5\u5b50\u4e2d\uff0cbefore\u548cwhen\u80fd\u540c\u65f6\u4f7f\u7528\u5417\u4e0d\u884c,before,\u548cwhen\u5747\u6307\u65f6\u95f4,\u7528\u5728\u4e00\u8d77\u4f1a\u6709\u903b\u8f91\u77db\u76fe.
before
\u82f1 [bɪ'fɔː] \u7f8e [bɪ'fɔr]
prep. \u5728\u2026\u4e4b\u524d\uff0c\u5148\u4e8e
adv. \u4ee5\u524d\uff1b\u5728\u524d
conj. \u5728\u2026\u4ee5\u524d\uff1b\u5728\u2026\u4e4b\u524d
when
\u82f1 [wɛn] \u7f8e [wɛn]
conj. \u8003\u8651\u5230\uff1b\u65e2\u7136\uff1b\u5f53\u2026\u65f6\uff1b\u5728\u2026\u65f6\uff1b\u5982\u679c
adv. \u4ec0\u4e48\u65f6\u5019\uff0c\u4f55\u65f6\uff1b\uff08\u7528\u4e8e\u65f6\u95f4\u7684\u8868\u8fbe\u65b9\u5f0f\u4e4b\u540e\uff09\u5728\u90a3\u65f6\uff1b\u5176\u65f6\uff1b\u5f53\u65f6
pron. \u90a3\u65f6\uff1b\u4ec0\u4e48\u65f6\u4faf
n. \u65f6\u95f4\uff0c\u65f6\u5019\uff1b\u65e5\u671f\uff1b\u573a\u5408
after
\u4ecb\u8bcd
1.\u5728...\u4ee5\u540e
After graduation he went abroad. \u6bd5\u4e1a\u540e\u4ed6\u53bb\u4e86\u56fd\u5916\u3002
At half after ten it began to rain. \u5728\u5341\u70b9\u534a\u4e0b\u8d77\u96e8\u6765\u3002
2.\u5728...\u540e\u9762;\u968f...\u4e4b\u540e
After you with the paper, please. \u8bf7\u60a8\u770b\u5b8c\u62a5\u7eb8\u540e\u7ed9\u6211\u3002
She entered the hall after her mother. \u5979\u8ddf\u968f\u5728\u5979\u6bcd\u4eb2\u4e4b\u540e\u8fdb\u5165\u5385\u5185\u3002
3.\u4f4e\u4e8e;\u6b21\u4e8e
A captain comes after a major. \u4e0a\u5c09\u519b\u8854\u4f4e\u4e8e\u5c11\u6821\u3002
4.\u9274\u4e8e,\u7531\u4e8e
After what had happened he could not continue to work there. \u9274\u4e8e\u6240\u53d1\u751f\u7684\u4e8b\u60c5,\u4ed6\u4e0d\u53ef\u80fd\u7ee7\u7eed\u5728\u90a3\u91cc\u5de5\u4f5c\u4e0b\u53bb\u4e86\u3002
5.\u4eff\u7167,\u6a21\u4eff
This is a painting after Picasso. \u8fd9\u662f\u4e00\u5e45\u4eff\u6bd5\u52a0\u7d22\u7684\u753b\u3002
6.\u4f9d\u7167;\u6309\u7167...\u7684\u540d\u5b57
The kid was named after his grandfather. \u8fd9\u5b69\u5b50\u662f\u4ee5\u4ed6\u7956\u7236\u7684\u540d\u5b57\u547d\u540d\u7684\u3002
7.\u5c3d\u7ba1
After all our efforts, the experiment failed. \u5c3d\u7ba1\u6211\u4eec\u505a\u4e86\u52aa\u529b,\u8bd5\u9a8c\u8fd8\u662f\u5931\u8d25\u4e86\u3002
8.\u641c\u5bfb,\u5bfb\u627e
Mary is after a better job. \u739b\u4e3d\u5728\u5bfb\u627e\u4e00\u4e2a\u66f4\u597d\u7684\u5de5\u4f5c\u3002
\u8fde\u8bcd
1.\u5728...\u4e4b\u540e
I will tell you after they leave. \u4ed6\u4eec\u8d70\u540e\u6211\u518d\u544a\u8bc9\u4f60\u3002
\u526f\u8bcd
1.\u4ee5\u540e,\u4e4b\u540e
They arrived shortly after. \u4e0d\u4e45\u4ee5\u540e\u4ed6\u4eec\u62b5\u8fbe\u4e86\u3002
2.\u5728\u540e\u9762,\u968f\u540e
Tom went on Monday, and Mary left the day after. \u6c64\u59c6\u661f\u671f\u4e00\u8d70\u7684,\u739b\u4e3d\u7b2c\u4e8c\u5929\u5c31\u79bb\u5f00\u4e86\u3002
\u5f62\u5bb9\u8bcd
1.\u4ee5\u540e\u7684
His health was declining in after years. \u5728\u4ee5\u540e\u7684\u5c81\u6708,\u4ed6\u7684\u5065\u5eb7\u4e0d\u65ad\u8870\u9000\u3002
2.\u540e\u90e8\u7684
A few passengers would have a stroll on the after deck before the evening meal. \u51e0\u4f4d\u4e58\u5ba2\u5c06\u5728\u665a\u996d\u524d\u5230\u540e\u7532\u677f\u4e0a\u6563\u6b65\u3002
as
\u526f\u8bcd
1.\u8ddf...\u4e00\u6837\u5730,\u540c\u6837\u5730
Sam is as rich as Alexander. \u5c71\u59c6\u50cf\u4e9a\u5386\u5c71\u5927\u4e00\u6837\u5bcc\u6709\u3002
2.\u5982\u540c;\u4f8b\u5982
Such animals as foxes and squirrels have bushy tails. \u6709\u4e9b\u52a8\u7269,\u5982\u72d0\u548c\u677e\u9f20,\u6709\u84ec\u677e\u7684\u5c3e\u5df4\u3002
\u4ecb\u8bcd
1.\u4f5c\u4e3a,\u4ee5...\u7684\u8eab\u4efd
She works as an interpreter in that company. \u5979\u5728\u8be5\u516c\u53f8\u91cc\u62c5\u4efb\u7ffb\u8bd1\u5458\u3002
2.\u5f53\u4f5c
She didn't think much of him as a painter. \u5979\u5bf9\u4ed6\u4f5c\u4e3a\u4e00\u4f4d\u753b\u5bb6\u8bc4\u4ef7\u4e0d\u9ad8\u3002
3.\u50cf;\u5982\u540c
The old woman was dressed as a young lady. \u8fd9\u4f4d\u8001\u5987\u4eba\u6253\u626e\u5f97\u50cf\u4e00\u4f4d\u5e74\u8f7b\u4eba\u3002
\u8fde\u8bcd
1.\u50cf...\u4e00\u6837;\u4f9d\u7167;\u50cf
You ought to do as Paul tells you. \u4f60\u5e94\u6309\u7167\u4fdd\u7f57\u5429\u5490\u7684\u505a\u3002
The work is not so difficult as you imagine. \u8fd9\u5de5\u4f5c\u4e0d\u50cf\u4f60\u60f3\u50cf\u7684\u90a3\u4e48\u56f0\u96be\u3002
2.\u5f53...\u65f6
As she left the room she remembered that book. \u5979\u79bb\u5f00\u623f\u95f4\u65f6\u60f3\u8d77\u4e86\u90a3\u672c\u4e66\u3002
3.\u968f\u7740
As the sun rose the fog dispersed. \u592a\u9633\u4e00\u51fa\u6765,\u96fe\u968f\u4e4b\u6d88\u5931\u3002
4.\u56e0\u4e3a
We didn't know what to do as we were just visiting there. \u6211\u4eec\u4e0d\u77e5\u9053\u8be5\u600e\u4e48\u529e,\u56e0\u4e3a\u5f53\u65f6\u6211\u4eec\u4ec5\u4ec5\u5728\u90a3\u91cc\u4f5c\u8bbf\u95ee\u3002
5.\u867d\u7136
Tired as he was, he sat up late. \u4ed6\u867d\u7136\u75b2\u5026,\u53ef\u4ecd\u7136\u5f88\u665a\u624d\u7761\u3002
when
\u526f\u8bcd
1.(\u7528\u4f5c\u7591\u95ee\u526f\u8bcd)\u4ec0\u4e48\u65f6\u5019,\u4f55\u65f6
I'd like to know when they'll let him out. \u6211\u60f3\u77e5\u9053\u4ed6\u4eec\u4ec0\u4e48\u65f6\u5019\u653e\u4ed6\u3002
When did you last see Margaret? \u4f60\u4e0a\u4e00\u6b21\u89c1\u5230\u739b\u683c\u4e3d\u7279\u662f\u4ec0\u4e48\u65f6\u5019?
(2.\u7528\u4f5c\u5173\u7cfb\u526f\u8bcd,\u5f15\u5bfc\u5173\u7cfb\u4ece\u53e5)\u5f53...\u65f6
There were times when I didn't know what to do. \u6709\u4e9b\u65f6\u5019\u6211\u4e0d\u77e5\u9053\u8be5\u600e\u4e48\u529e\u624d\u597d\u3002
\u8fde\u8bcd
1.\u5f53...\u65f6
John got engaged to her when travelling last winter. \u53bb\u5e74\u51ac\u5929\u65c5\u884c\u65f6,\u7ea6\u7ff0\u4e0e\u5979\u8ba2\u4e86\u5a5a\u3002
Don't get excited when you talk. \u4f60\u8bf4\u8bdd\u65f6\u522b\u6fc0\u52a8\u3002
2.\u65e2\u7136,\u8003\u8651\u5230
How can he get the promotion when his boss dislikes him? \u65e2\u7136\u4e0a\u53f8\u4e0d\u559c\u6b22\u4ed6,\u90a3\u4ed6\u600e\u4e48\u4f1a\u83b7\u5f97\u63d0\u5347\u5462?
3.\u867d\u7136,\u7136\u800c
I had only fifteen dollars on me when the book I wanted cost twenty. \u6211\u8eab\u4e0a\u53ea\u5e26\u4e86\u5341\u4e94\u5143\u94b1,\u53ef\u662f\u6211\u60f3\u4e70\u7684\u90a3\u672c\u4e66\u5b9a\u4ef7\u4e8c\u5341\u5143\u3002
4.\u5728\u90a3\u65f6,\u7136\u540e
\u4ee3\u8bcd
1.\u4ec0\u4e48\u65f6\u5019,\u90a3\u65f6
Since when has she taught here? \u5979\u4ece\u4ec0\u4e48\u65f6\u5019\u5f00\u59cb\u5728\u8fd9\u513f\u6559\u4e66\u7684?
\u540d\u8bcd
1.(\u4e8b\u4ef6\u53d1\u751f\u7684)\u65f6\u95f4
before
\u4ecb\u8bcd
1.\u5728...\u4ee5\u524d
Only two days remained before the examination. \u8003\u524d\u53ea\u5269\u4e0b\u4e24\u5929\u4e86\u3002
2.(\u6307\u987a\u5e8f\u3001\u91cd\u8981\u6027\u7b49)\u5728...\u4e4b\u524d,\u5148\u4e8e
Your name comes before mine. \u4f60\u7684\u540d\u5b57\u5728\u6211\u4e4b\u524d\u3002
Pride comes before a fall. \u9a84\u5fc5\u8d25\u3002
3.\u7531...\u8003\u8651\u4e2d
We will put the matter before the committee. \u6211\u5c06\u628a\u6b64\u4e8b\u63d0\u4ea4\u59d4\u5458\u4f1a\u8003\u8651\u3002
4.\u5728...\u524d\u9762;\u5728...\u9762\u524d
She said she had never spoken before an audience. \u5979\u8bf4\u5979\u4ece\u672a\u5728\u5927\u5ead\u5e7f\u4f17\u8bb2\u6f14\u8fc7\u3002
\u526f\u8bcd
1.\u8f83\u65e9
Come at two o'clock, not before. \u4e24\u70b9\u949f\u6765,\u4e0d\u5fc5\u518d\u65e9\u4e86\u3002
2.\u4ee5\u524d;\u66fe\u7ecf
He was never late before. \u8fc7\u53bb\u4ed6\u4ece\u4e0d\u8fdf\u5230\u3002
Have you two met before? \u4f60\u4eec\u4e24\u4eba\u4ee5\u524d\u89c1\u8fc7\u9762\u5417?
3.\u5728\u524d;\u5411\u524d
Several soldiers went before to scout. \u6570\u540d\u58eb\u5175\u5728\u524d\u9762\u63a2\u8def\u3002
\u8fde\u8bcd
1.\u5728...\u4ee5\u524d
Check it carefully before you hand it in. \u4ea4\u6765\u4e4b\u524d\u4ed4\u7ec6\u6838\u5bf9\u4e00\u4e0b\u3002
2.\u4e0e\u5176...\u5b81\u53ef
I'd die before I'd tell. \u6211\u5b81\u6b7b\u4e5f\u51b3\u4e0d\u4f1a\u8bf4\u51fa\u6765\u3002
3.\u5426\u5219,\u8981\u4e0d\u7136
Get out before I call the police. \u6eda\u5f00,\u5426\u5219\u6211\u53eb\u8b66\u5bdf\u3002
since
\u526f\u8bcd
1.\u6b64\u540e;\u4ece\u90a3\u65f6\u5230\u73b0\u5728
She left school three years ago and has worked as a nurse ever since. \u5979\u4e09\u5e74\u524d\u6bd5\u4e1a,\u4ece\u90a3\u65f6\u8d77\u4fbf\u4e00\u76f4\u5f53\u62a4\u58eb\u3002
2.\u4e4b\u524d,\u4ee5\u524d
\u4ecb\u8bcd
1.(\u5e38\u7528\u4e8e\u73b0\u5728\u5b8c\u6210\u65f6\u6216\u8fc7\u53bb\u5b8c\u6210\u65f6)\u81ea...\u4ee5\u6765,\u4ece...\u81f3\u4eca
I haven't heard from him since last year. \u6211\u81ea\u53bb\u5e74\u4ee5\u6765\u672a\u66fe\u6536\u5230\u8fc7\u4ed6\u7684\u4fe1\u3002
\u8fde\u8bcd
1.(\u5e38\u7528\u4e8e\u73b0\u5728\u5b8c\u6210\u65f6\u6216\u8fc7\u53bb\u5b8c\u6210\u65f6)\u81ea...\u4ee5\u6765,\u4ece...\u81f3\u4eca
It's been ten years since they married. \u4ed6\u4eec\u7ed3\u5a5a\u5230\u73b0\u5728\u5df2\u7ecf\u5341\u5e74\u4e86\u3002
She has been living a hard life since her husband died. \u5979\u81ea\u4ece\u4e08\u592b\u6b7b\u540e,\u4e00\u76f4\u8fc7\u7740\u8270\u82e6\u7684\u751f\u6d3b\u3002
2.\u65e2\u7136;\u56e0\u4e3a,\u7531\u4e8e
He must have taken the book since it isn't here. \u4ed6\u4e00\u5b9a\u662f\u628a\u4e66\u62ff\u8d70\u4e86,\u56e0\u4e3a\u4e66\u5df2\u4e0d\u5728\u8fd9\u91cc\u4e86\u3002
Since it is so hot, let's go swimming. \u65e2\u7136\u5929\u6c14\u8fd9\u4e48\u70ed,\u6211\u4eec\u53bb\u6e38\u6cf3\u5427\u3002
差别主要在意思上:when是指正当时,当...的时候.
而before是在...之前.
1句中很明显用when比较好,
你到达车站时,根本不知道车是在什么时候走的,到底是到之前走的,还是刚踏进车站大门它才走,你根本不知道,所以逻辑上来说,用when比较合理
第二个就是英语中的习惯性的用法了,虽然中文中有时会说"在你走的时候把灯关掉",但是老外不这样说,老外只用"在你走之前把灯关掉"
第三句中可用"before",也可用"when"
因为,用before时,有可能是另外一个人告诉你的,他或许一直是呆在车站的,你到了车站后,发现车已经走了,这时这个人告诉你说"在你到之前,车就走了",
用when时和第一句一样.
when的意思是当...的时候
before是在...之前
你翻译看看就知道什么意思了
当我到车站的时候,火车已经开走了
在你离开之前不要忘记关灯
when before 在各个位置都可以,没有什么特别要求
该过的句子,你翻译看看就知道,这里填写when
第一句，在我来到车站之前，火车已经开了（这句话翻译就很牵强）。
当我来到车站的时候（我看到的情景）（是）火车已经开走了。
第二句，在你离开之前别忘了把电灯关掉，很符合情景。
而when当你离开的时候，（已经离开了，怎么关？）
when 用在句子首或中间。 before用在居中意思为在什么什么之前
绛旓細when鍜before閮藉彲寮曞鏃堕棿鐘惰浠庡彞,宸埆涓昏鍦ㄦ剰鎬濅笂:when鏄寚姝ｅ綋鏃,褰...鐨勬椂鍊.鑰宐efore鏄湪...涔嬪墠.1鍙ヤ腑寰堟槑鏄剧敤when姣旇緝濂,浣犲埌杈捐溅绔欐椂,鏍规湰涓嶇煡閬撹溅鏄湪浠涔堟椂鍊欒蛋鐨,鍒板簳鏄埌涔嬪墠璧扮殑,杩樻槸鍒氳笍杩涜溅绔欏ぇ闂ㄥ畠鎵嶈蛋,浣犳牴鏈笉鐭ラ亾,鎵浠ラ昏緫涓婃潵璇,鐢╳hen姣旇緝鍚堢悊 绗簩涓氨鏄嫳璇腑鐨勪範鎯х殑...
绛旓細涓嶈,before,鍜when鍧囨寚鏃堕棿,鐢ㄥ湪涓璧蜂細鏈夐昏緫鐭涚浘.before 鑻 [bɪ'fɔː] 缇 [bɪ'fɔr]prep. 鍦ㄢ︿箣鍓嶏紝鍏堜簬 adv. 浠ュ墠锛涘湪鍓 conj. 鍦ㄢ︿互鍓嶏紱鍦ㄢ︿箣鍓 when 鑻 [wɛn] 缇 [wɛn]conj. 鑰冭檻鍒帮紱鏃㈢劧锛涘綋鈥︽椂锛涘湪鈥︽椂锛涘鏋 adv. 浠...
绛旓細when 鑻 [wen] 缇 [wɛn]adv.褰撴椂;浠涔堟椂鍊;锛堢敤浜庢椂闂寸殑琛ㄨ揪鏂瑰紡涔嬪悗锛夊湪閭ｆ椂;鍏舵椂 conj.濡傛灉;鍦ㄢ︽椂;鏃㈢劧 before 鑻 [bɪˈfɔ:(r)] 缇 [bɪˈfɔr,-ˈfor]prep.鍦ㄢ︿箣鍓;鍏堜簬锛屼紭浜;褰撶潃鈥︾殑闈;涓庡叾鈥onj.鍦ㄢ︿箣鍓;鍦ㄢ︿互鍓;姣...
绛旓細1) when寮曞鏃堕棿鐘惰浠庡彞鏃惰〃绀衡滃綋鈥︹︾殑鏃跺欌濓紝 when鏃㈠彲浠ユ寚鏃堕棿娈典篃鍙寚鏃堕棿鐐癸紝 浠庡彞涓棦鍙敤寤剁画鎬у姩璇嶅張鍙敤闈炲欢缁у姩璇嶏紝 涓斿姩浣滄棦鍙拰涓诲彞鐨勫姩浣滃悓鏃跺彂鐢熷張鍙湪涓诲彞鐨勫姩浣滀箣鍓嶆垨涔嬪悗鍙戠敓 2)before寮曞鏃堕棿鐘惰浠庡彞鏃惰〃绀轰富鍙ョ殑鍔ㄤ綔鍙戠敓鍦ㄤ粠鍙ュ姩浣滀箣鍓 3)after寮曞鏃堕棿鐘惰浠庡彞鏃惰〃绀轰富鍙ョ殑鍔ㄤ綔...
绛旓細when浣滃苟鍒楄繛璇嶆瀯鎴愬苟鍒楀彞锛屾剰涓篴nd at that time鈥滄鍦ㄩ偅鏃垛濓紝 and just then鈥滈偅鏃垛濇垨and then鈥滅獊鐒垛濈瓑鎰忔濄倃hen鍓嶅彲浠ョ敤閫楀彿锛屼篃鍙互鐪佺暐銆傚悓鏃讹紝when鍙笌suddenly杩炵敤浠ュ姞寮鸿姘斻傝繖绉嶇粨鏋勫父甯哥敤鏉ヨ〃绀哄彂鐢熺殑浜嬫儏甯︽湁鎰忓鐨勬ц川銆傚叾鍙ュ瀷鏈変笁绫伙細1. sb. was doing sth. when 锛坰uddenly锛......
绛旓細bofore 琛ㄧず涓诲彞鍔ㄤ綔鍙戠敓鍦ㄤ粠鍙ュ姩浣滀箣鍓 鍦ㄣ傘傘備箣鍓 when 鐢ㄤ簬涓诲彞鍜屼粠鍙ュ姩浣滃悓鏃跺彂鐢熸垨浠庡彞鍔ㄤ綔鍏堜簬鎴栬繜浜庝富鍙ュ姩浣 锛 褰撱傘傘1.鍦ㄩ粦澶滈檷涓村墠锛屾垜浠埌杈句簡閭ｄ釜灏忓煄甯 2.鍦ㄦ垜浠煡閬撶湡鐩稿墠锛岃繕鏈変竴娈垫椂闂 3.褰撲粬鍒板鏃讹紝杩樹笉鍒板叓鐐广傚洜璇ュ緢濂界悊瑙ｃ傘傘
绛旓細1銆before锛氫互鍓嶏紱浠ュ線锛涗箣鍓 2銆乻ince锛氭鍚 3銆乼hat锛氶潪甯革紱閭ｄ箞鍦 4銆乤fter锛氫互鍚庯紱鍚庢潵 5銆when锛氫粈涔堟椂鍊欙紱褰 ... 鏃 浜屻佺敤娉曚笉鍚 1銆乥efore锛氬彧鑳芥帴琛ㄧず鏃堕棿鐐圭殑鍚嶈瘝锛岃屼笉鑳芥帴琛ㄧず鏃堕棿娈电殑鍚嶈瘝銆2銆乻ince锛氭帴鍚嶈瘝銆佸姩鍚嶈瘝浣滃叾瀹捐銆3銆乼hat锛氬紩瀵奸檺鍒舵у畾璇粠鍙ュ湪浠庡彞涓敤浣滃璇4銆...
绛旓細( 2 ) When (we are ) young, we are full of hope. 骞磋交鏃,鎴戜滑澶у鎬绘槸鍏呮弧甯屾湜銆 ( 3 ) Don't reach sideways when standing on a ladder. 绔欏湪姊瓙涓婃椂,涓嶈渚х潃韬瓙鍘诲涓滆タ銆Before鐨勭敤娉:涓銆 before鐢ㄤ綔杩炶瘝 1. before鐢ㄤ綔杩炶瘝鏃,鎰忔濇槸鈥滃湪鈥︹︿箣鍓;杩樻病鏉ュ緱鍙 鈥︹﹀氨鈥濄備緥濡: Before...
绛旓細before 鏄寚浠庡彞鍙戠敓鍦ㄤ富鍙ヤ箣鍓嶏紝after鏄箣鍚庯紝when 琛ㄧず鍚屾椂
绛旓細before鍜when娌′粈涔堣鍖哄垎鐨,鍥犱负浠栦滑淇╀篃涓嶅鏄撴悶娣.You should stop the train before it is too late.浣犲繀椤婚樆姝㈢伀杞,瑕佷笉鐒跺氨澶繜浜.beore缈昏瘧鎴愬湪.涔嬪墠.before 鏈変袱涓壒娈婄敤娉.杩欎袱涓敤娉曟瘮杈冨鏄撴贩娣.灏辨槸long before 鍜宐efore long,鍓嶈呰〃绀哄緢涔呬互鍓,鍚庤呰〃绀轰笉涔呬互鍚.浣嗘槸,浠栦滑鐨勮瘝鎬т笉鍚,...
