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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绛旓細鑷粠涓夊勾鍓嶄互鏉ユ垜涓鐩村湪瀛鑻辫銆傦紙鍔ㄤ綔杩樺皢缁х画涓嬪幓锛2銆佽〃绀哄湪璇磋瘽鏃跺埢涔嬪墠鍒氬垰缁撴潫鐨勫姩浣溿俉e have been waiting for you for half an hour.鎴戜滑宸茬粡绛変綘鍗婁釜閽熷ご浜嗐傦紙鍔ㄤ綔涓嶅湪缁х画涓嬪幓锛3銆佹湁浜涚幇鍦ㄥ畬鎴愯繘琛屾椂鐨勫彞瀛愮瓑鍚屼簬鐜板湪瀹屾垚鏃剁殑鍙ュ瓙銆俆hey have been living in this city for ten years....
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