if后从句什么时候用虚拟什么时候不用 if引导的句子什么时候用虚拟语气，什么时候不要用虚拟语气呢？
if\u4ec0\u4e48\u65f6\u5019\u5f15\u5bfc\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\uff0c\u4ec0\u4e48\u65f6\u5019\u7528\u865a\u62df\u8bed\u6c14\u6b63\u5e38\u7684\u8bf4\u660e\u60c5\u51b5\uff0c\u5c31\u662f\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u3002
\u5982\u679c\u662f\u5047\u8bbe\uff08\u8fc7\u53bb\u7684\u4e8b\uff09\uff0c\u63a8\u6d4b\uff08\u672a\u6765\u7684\u4e8b\u513f\uff09\uff0c\u591a\u6570\u7528\u865a\u62df\u8bed\u6c14\u3002
\u5f15\u5bfc\u7684\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u7684\u5206\u7c7b\u53ca\u865a\u62df\u6761\u4ef6\u53e5\u7684\u5224\u65ad
1\u3001\u53ef\u4ee5\u628a\u6761\u4ef6\u53e5\u5206\u4e3a\u4e24\u7c7b\uff1a
1).\u771f\u5b9e\u6761\u4ef6\u53e5\uff08Sentences
of
Real
Condition\uff09\uff1a\u51e1\u662f\u5047\u8bbe\u7684\u60c5\u51b5\u53d1\u751f\u6027\u53ef\u80fd\u5f88\u5927,\u5c31\u662f\u771f\u5b9e\u6761\u4ef6\u53e5.\u4f8b\u5982\uff1a
\u2474\u3001If
I
have
time
,
I
will
help
you
with
this
work.\u5982\u679c\u6211\u6709\u65f6\u95f4\u4f1a\u5e2e\u52a9\u4f60\u505a\u6b64\u5de5\u4f5c\u7684.
\u2475\u3001As
long
as
I
say
anything
wrong,
you
must
point
it
out.\u53ea\u8981\u6211\u8bf4\u4e86\u4ec0\u4e48\u9519\u8bdd,\u4f60\u4e00\u5b9a\u8981\u6307\u51fa\u6765.
\u2476\u3001If
time
permits,
we'll
go
fishing
together.(\u5982\u679c\u6709\u65f6\u95f4\u7684\u8bdd,\u6211\u4eec\u5c31\u4e00\u8d77\u53bb\u9493\u9c7c.\uff09
2).\u865a\u62df\u6761\u4ef6\u53e5\uff08Sentences
of
Unreal
Condition\uff09\uff1a\u5f53\u5047\u8bbe\u662f\u4e0d\u5927\u53ef\u80fd\u5b9e\u73b0\u65f6,\u5c31\u662f\u865a\u62df\u6761\u4ef6\u53e5.\u4f8b\u5982\uff1a
\u2474\u3001If
I
were
you
,
I
would
have
attended
the
meeting.
\u5982\u679c\u6211\u662f\u4f60\u7684\u8bdd,\u5c31\u53bb\u53c2\u52a0\u4f1a\u8bae\u4e86.
\u2475\u3001If
he
had
come
here
yesterday,
he
would
have
seen
his
old
friend.\u5047\u5982\u4ed6\u6628\u5929\u6765\u8fd9\u513f\u7684\u8bdd,\u5c31\u4f1a\u770b\u89c1\u4ed6\u7684\u8001\u670b\u53cb.
\u2474\u3001If
it
had
rained
yesterday,
we
would
have
stayed
at
home.\uff08\u5982\u679c\u6628\u5929\u4e0b\u96e8\u7684\u8bdd,\u6211\u4eec\u5c31\u4f1a\u7559\u5728\u5bb6\u91cc.\uff09
2\u3001.if\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u4e2d\u865a\u62df\u8bed\u6c14\u7684\u5224\u65ad
\u5224\u65ad\u662f\u771f\u5b9e\u6761\u4ef6\u53e5\u8fd8\u662f\u975e\u771f\u5b9e\u6761\u4ef6\u53e5.\u53ea\u6709\u5728\u975e\u771f\u5b9e\u6761\u4ef6\u53e5\u4e2d\u624d\u4f7f\u7528\u865a\u62df\u8bed\u6c14.\u901a\u8fc7\u53e5\u5b50\u610f\u601d,\u770b\u5047\u8bbe\u7684\u6761\u4ef6\u662f\u5426\u80fd\u591f\u5b9e\u73b0,\u80fd\u591f\u5b9e\u73b0\u662f\u771f\u5b9e\u6761\u4ef6\u53e5,\u4e0d\u80fd\u4f7f\u7528\u865a\u62df\u8bed\u6c14\uff1b\u5047\u8bbe\u7684\u6761\u4ef6\u4e0d\u80fd\u5b9e\u73b0\u5219\u662f\u975e\u771f\u5b9e\u6761\u4ef6\u53e5,\u8981\u7528\u865a\u62df\u8bed\u6c14.
\u5224\u65ad\u8fd9\u4e2a\u5047\u8bbe\u662f\u4e0e\u54ea\u4e2a\u4e8b\u5b9e\u76f8\u53cd.\u901a\u5e38\u6709\u4e09\u79cd\u60c5\u51b5\uff1a\u2460\u4e0e\u8fc7\u53bb\u4e8b\u5b9e\u76f8\u53cd.\u2461\u4e0e\u73b0\u5728\u4e8b\u5b9e\u76f8\u53cd.\u2462\u4e0e\u5c06\u6765\u4e8b\u5b9e\u53ef\u80fd\u76f8\u53cd.
3\u3001\u201c\u540e\u9000\u4e00\u6b65\u6cd5\u201d
\u540e\u9000\u4e00\u6b65\u6cd5\u662f\u6307\u5728\u51c6\u786e\u5730\u5224\u65ad\u4e86\u8be5\u53e5\u4e0e\u54ea\u4e00\u4e8b\u5b9e\u76f8\u53cd\u540e,\u6309\u865a\u62df\u8bed\u6c14\u7684\u540e\u9000\u4e00\u6b65\u6cd5\u5904\u7406\u4ece\u53e5\u8c13\u8bed\u52a8\u8bcd\u7684\u65f6\u6001.\u5373\uff1a\u5728\u975e\u771f\u5b9e\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u4e2d,\u8c13\u8bed\u52a8\u8bcd\u6309\u6b63\u5e38\u60c5\u51b5\u201c\u540e\u9000\u4e00\u6b65\u201d.\u4e5f\u5c31\u662f\uff1a
\u2460\u4e0e\u8fc7\u53bb\u4e8b\u5b9e\u76f8\u53cd,\u5728\u4ece\u53e5\u4e2d\u7528\u8fc7\u53bb\u5b8c\u6210\u65f6\u5f62\u5f0f\u8868\u793a.
\u2461\u4e0e\u73b0\u5728\u4e8b\u5b9e\u76f8\u53cd,\u5728\u4ece\u53e5\u4e2d\u7528\u8fc7\u53bb\u4e00\u822c\u65f6\u5f62\u5f0f\u8868\u793a.
\u2462\u4e0e\u5c06\u6765\u4e8b\u5b9e\u53ef\u80fd\u76f8\u53cd,\u5728\u4ece\u53e5\u4e2d\u7528\u8fc7\u53bb\u5c06\u6765\u65f6\u5f62\u5f0f\u8868\u793a.
\u4e3b\u53e5\u4e2d\u5219\u7528\u60c5\u6001\u52a8\u8bcdwould,
should,
could
\u7b49\u52a0\u4e00\u4e2a\u4e0e\u4ece\u53e5\u4e00\u81f4\u7684\u52a8\u8bcd\u5f62\u5f0f.\u4f8b\uff1a
\u2474\u3001If
I
had
come
her
yesterday,
I
would
have
seen
him.
\u2475\u3001If
I
were
a
teacher,
I
would
be
strict
with
my
students.
\u2476\u3001If
it
should
snow
tomorrow,
they
couldn't
go
out.
4\u3001\u6ce8\u610f\u4e8b\u9879
\u2460if\u6761\u4ef6\u53e5\u4e2d\u5982\u6709were,
should,
had,\u53ef\u4ee5\u7701\u53bbif,\u5e76\u4f7f\u7528\u5012\u88c5\u8bed\u5e8f.
\u2461\u5728\u73b0\u4ee3\u82f1\u8bed\u4e2dif\u6761\u4ef6\u72b6\u4e0e\u4ece\u53e5\u4e2d\u7684\u8c13\u8bed\u52a8\u8bcd\u5982\u679c\u662fbe\u5176\u8fc7\u53bb\u5f62\u5f0f\u4e00\u822c\u7528were.
所以记住虚拟语气的定义
例子 ：
If he comes, he will bring his violin. 如果他来，会带小提琴来的。可以实现
If you leave now, you will never regret it. 可以实现
虚拟语气：
If he had come yesterday, I should / would have told him about
it.如果他昨天来的话，我会把这件事告诉他的。
含义：He did not come yesterday, so I did not tell him about it.
②在现代英语中if条件状与从句中的谓语动词如果是be其过去形式一般用were。 判断是不是虚拟语气，要先判断是真实条件句还是非真实条件句。只有在非真实
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绛旓細鍥炵瓟锛氳櫄鎷熻姘(Subjunctive Mood)杩欎竴璇硶椤圭洰鏄悇绫昏嫳璇冭瘯涓績娴嬭瘯鐨勯噸鐐逛箣涓銆傝櫄鎷熻姘旀槸涓绉嶇壒娈婄殑鍔ㄨ瘝褰㈠紡,鐢ㄦ潵琛ㄧず璇磋瘽浜烘墍璇寸殑璇濆苟涓嶆槸浜嬪疄,鑰屾槸涓绉嶅亣璁俱佹効鏈涖佹鐤戞垨鎺ㄦ祴銆 鈪犵敤浠ヨ〃绀鸿櫄鎷熸潯浠鐨勮櫄鎷璇皵 鈷 鐢if鏉′欢浠庡彞琛ㄧず鐨勮櫄鎷熸潯浠,鏄櫄鎷熸潯浠舵渶鏅氱殑鏂瑰紡銆 鈶 铏氭嫙鐜板湪鏃惰〃绀轰笌鐜板湪浜嬪疄...
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绛旓細if鍚庨潰璺熺殑鏃舵佷笉鍚岀殑鍘熷洜鍙婁緥鍙ュ涓嬶細涓銆乮f浣滀负杩炶瘝锛屽紩瀵兼潯浠剁姸璇粠鍙ワ紝瀹冭〃绀虹殑鎰忔濇槸鈥滃亣濡傗濃滃鏋溾濈瓑銆傚湪澶嶅悎鍙ヤ腑濡傛灉涓诲彞鐢ㄥ皢鏉ユ椂锛屽垯if寮曞鐨勭姸璇粠鍙ョ敤涓鑸幇鍦ㄦ椂銆備緥濡傦細1.If itdoesn鈥檛rain, we will go to the park next&#...
