英语时态问题
\u82f1\u8bed\u52a8\u8bcd\u65f6\u6001\u95ee\u98981\u3001\u8fd9\u91cc\u8bf4\u7684\u662f\u5728\u8fc7\u53bb\u7684\u51e0\u4e2a\u661f\u671f\uff0c\u6240\u4ee5\u7528\u73b0\u5728\u5b8c\u6210\u65f6\uff0c\u5728\u8fc7\u53bb\u7684\u8fc7\u53bb\u624d\u7528\u8fc7\u53bb\u5b8c\u6210\u65f6
2\u3001\u8fd9\u91cc\u548cbe going to do \u7ed3\u6784\u6ca1\u6709\u5173\u7cfb\uff0c\u8fd9\u53e5\u8bdd\u7684\u610f\u601d\u662f\u53ea\u8981\u6211\u4eec\u5df2\u5b8c\u6210\u6211\u4eec\u7684\u671f\u672b\u8003\u8bd5\u6211\u4eec\u5c31\u53bb\u4f5b\u6d1b\u96f7\u8fbe
3\u3001\u8fd9\u53e5\u8bdd\u7684\u610f\u601d\u662f\u8bf4\u5f53\u8b66\u5bdf\u5230\u7684\u65f6\u5019\u5f88\u591a\u4eba\u90fd\u7ad9\u5728\u5468\u56f4\uff0c\u8fd9\u91cc\u4e3b\u8981\u662f\u8003\u7684when\u5f15\u5bfc\u7684\u65f6\u95f4\u72b6\u8bed\u4ece\u53e5\uff0c\u524d\u9762\u7528\u7684\u8fc7\u53bb\u8fdb\u884c\u65f6\uff0c\u540e\u9762\u5219\u7528\u8fc7\u53bb\u5f0f
(1) \u73b0\u5728\u5b8c\u6210\u65f6\u53ef\u4ee5\u8868\u793a\u4e00\u4e2a\u5df2\u7ecf\u5b8c\u6210\u7684\u52a8\u4f5c\uff0c\u800c\u73b0\u5728\u5b8c\u6210\u8fdb\u884c\u65f6\u5219\u8868\u793a\u4e00\u4e2a\u6b63\u5728\u8fdb\u884c\u7684\u52a8\u4f5c\uff1a
I have read the book. \u6211\u8bfb\u8fc7\u8fd9\u672c\u4e66\u3002
I have been reading the book. \u6211\u4e00\u76f4\u5728\u8bfb\u8fd9\u672c\u4e66\u3002
\u3010\u6ce8\u3011\u6709\u5c11\u6570\u52a8\u8bcd(\u5982work, study, live, teach, stay\u7b49)\u5728\u8868\u793a\u6301\u7eed\u4e00\u65f6\u95f4\u65f6\u7528\u8fd9\u4e24\u79cd\u65f6\u6001\u542b\u4e49\u5dee\u4e0d\u591a(\u53ea\u662f\u7528\u73b0\u5728\u5b8c\u6210\u8fdb\u884c\u8fdb\u66f4\u5f3a\u8c03\u52a8\u4f5c\u7684\u6301\u7eed\u6027)\uff1a
How long have you worked [been working] here? \u4f60\u5728\u8fd9\u513f\u5de5\u4f5c\u591a\u4e45\u4e86\uff1f
I\u2019ve lived [been living] here since 1988. \u81ea1988\u5e74\u4ee5\u6765\u6211\u5c31\u4e00\u76f4\u4f4f\u5728\u8fd9\u513f\u3002
(2) \u73b0\u5728\u5b8c\u6210\u65f6\u901a\u5e38\u53ea\u9648\u8ff0\u4e8b\u5b9e\uff0c\u800c\u73b0\u5728\u5b8c\u6210\u8fdb\u884c\u65f6\u8fd8\u53ef\u8868\u793a\u4e00\u79cd\u611f****\u5f69\uff1a
I have waited for two hours. \u6211\u7b49\u4e86\u4e24\u5c0f\u65f6\u3002(\u9648\u8ff0\u4e8b\u5b9e)
I have been waiting for two hours. \u6211\u7b49\u4e86\u4e24\u4e2a\u5c0f\u65f6\u3002(\u7b49\u5f97\u597d\u8f9b\u82e6)
(3) \u73b0\u5728\u5b8c\u6210\u8fdb\u884c\u65f6\u901a\u5e38\u7528\u6765\u8c08\u8bba\u8f83\u77ed\u6682\u7684\u52a8\u4f5c\u6216\u60c5\u51b5\uff0c\u82e5\u8981\u8c08\u8bba\u65f6\u95f4\u5ef6\u7eed\u8f83\u957f\u7684\u52a8\u4f5c\u6216\u60c5\u51b5\u6216\u6c38\u4e45\u6027\u60c5\u51b5\uff0c\u5219\u901a\u5e38\u7528\u73b0\u5728\u5b8c\u6210\u65f6\uff1a
He has lived in Paris. \u4ed6(\u4e00\u76f4)\u4f4f\u5728\u5df4\u9ece\u3002
He has been living in Paris. \u4ed6(\u76ee\u524d)\u4f4f\u5728\u5df4\u9ece\u3002(\u8868\u6682\u65f6\u6027)
(4) \u4e0d\u7528\u4e8e\u8fdb\u884c\u65f6\u6001\u7684\u52a8\u8bcd\u901a\u5e38\u4e5f\u4e0d\u7528\u4e8e\u73b0\u5728\u5b8c\u6210\u8fdb\u884c\u65f6\uff0c\u4f46\u5b83\u4eec\u53ef\u4ee5\u7528\u4e8e\u73b0\u5728\u5b8c\u6210\u65f6\uff1a
I\u2019ve only known her for two day. \u6211\u8ba4\u8bc6\u5979\u521a\u521a\u4e24\u5929\u3002
They\u2019ve been married for twenty years. \u4ed6\u4eec\u7ed3\u5a5a\u5df2\u4e8c\u5341\u5e74\u4e86\u3002
The war has lasted for a long time. \u8fd9\u573a\u6218\u4e89\u6301\u7eed\u4e86\u5f88\u957f\u65f6\u95f4\u3002
(5) \u73b0\u5728\u5b8c\u6210\u8fdb\u884c\u65f6\u4e0d\u7528\u4e8e\u88ab\u52a8\u8bed\u6001\uff0c\u82e5\u8981\u7528\u53ef\u7528\u73b0\u5728\u5b8c\u6210\u65f6\u7684\u88ab\u52a8\u8bed\u6001\u4ee3\u66ff\uff1a
The house has been painted for a month. \u8fd9\u623f\u5b50\u5df2\u6f06\u4e86\u4e00\u4e2a\u6708\u3002
The problem has been studied for five days. \u8fd9\u4e2a\u95ee\u9898\u5df2\u7814\u7a76\u4e86\u4e94\u5929\u3002
但是要保证整个文件中的时态是要基本保持一致的。
个人觉得现在式更符合听众，而且你在使用ppt介绍的时候，展示的也是目前的情况。
不是不能用过去式。也可以，但也要注意，如果你使用过去式，那么整篇文件中的基本时态也需要保持一致。
要么都是现在时态，要么都是过去时态。这都没有问题。
不能一会现在时态，一会过去时态。
当然是 were 这个是发生过的事情
个人觉得用过去式比较合适。因为调查发生在过去。而且英文文献写文章都用的是过去式。所以建议用过去式。
当然是are，你这个陈述的是一个事实。
用are!用一般现在时来表示！
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绛旓細a big mistake.鍚屾牱锛岃繖閲岄渶瑕佹瘮杈冧袱缁勫姩璇嶅彂鐢熺殑鍏堝悗锛岄鍏堟槸spoken out & realize ,鏄剧劧spoken out 鍦ㄥ厛锛況ealize & had made 鏄庢樉had made 鍦ㄥ厛銆傛讳綋鑰岃█锛岃鐨勯兘鏄繃鍘伙紝鎵浠ョ敤鐨勯兘鏄拰杩囧幓鏈夊叧鐨鏃舵銆傝繃鍘诲畬鎴愭椂鏄繃鍘荤殑杩囧幓锛屾墍浠ラ渶瑕佸弬鐓х墿銆傚笇鏈涜兘澶熷府鍒颁綘鍝燂紒璇峰強鏃堕噰绾冲拰鐐硅禐锛侊紒
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绛旓細涓銆佷竴鑸皢鏉ユ椂锛氭蹇碉細琛ㄧず灏嗚鍙戠敓鐨勫姩浣滄垨瀛樺湪鐨勭姸鎬佸強鎵撶畻銆佽鍒掓垨鍑嗗鍋氭煇浜嬨傛椂闂寸姸璇細tomorrow锛宯ext day(week锛宮onth锛寉ear鈥)锛宻oon锛宨n a few minutes锛宐y鈥︼紝the day after tomorrow锛宔tc.鍩烘湰缁撴瀯锛氫富璇+am/is/are+going to + do锛泈ill/shall + do.浜屻佷竴鑸幇鍦ㄦ椂锛氭蹇碉細缁忓父銆佸弽澶...
