什么时候用情态动词+have+done，什么时候用would，could等情态动词的过去式，单项选择时，如何区分两者 什么时候用情态动词+have+done，什么时
\u4ec0\u4e48\u65f6\u5019\u7528\u60c5\u6001\u52a8\u8bcd+have+done,\u4ec0\u4e48\u65f6\u5019\u7528would\uff0ccould\u7b49\u60c5\u6001\u52a8\u8bcd\u7684\u8fc7\u53bb\u5f0f\u3002 \u662f\u4e0d\u662f\u542b\u6bd4\u8f83\u65f6\u7528\u7b2c\u4e00\u79cd\u554a\u697c\u4e3b\u3002\u3002\u4f60\u7684\u95ee\u9898\u80fd\u4e0d\u80fd\u8bf4\u6e05\u695a\u554a\uff1f\u6211\u6ca1\u770b\u61c2\u54ce\u3002\u3002\u3002would,could\u672c\u6765\u5c31\u662f\u60c5\u6001\u52a8\u8bcdwill,can\u7684\u8fc7\u53bb\u5f0f\u3002\u3002\u3002\u53ef\u4ee5\u8868\u73b0\u8bf4\u8bdd\u4eba\u7684\u8bed\u6c14\u5a49\u8f6c\uff0c\u4e00\u822c\u63d0\u95ee\u65f6\u90fd\u7528would\uff0ccould\uff0c\u800c\u4e0d\u7528will\uff0ccan\u3002
should have done \u662f\u201c\uff08\u8fc7\u53bb\uff09\u672c\u5e94\u8be5\u505a\u67d0\u4e8b\u800c\u6ca1\u6709\u505a\u201d\u7684\u610f\u601d\uff0c\u4e0d\u662f\u6bd4\u8f83\uff0c\u662f\u542b\u6709\u4e00\u79cd\u8d23\u5907\u7684\u610f\u5473\u5728\u91cc\u9762\u3002
\u800c\u201c\u60c5\u6001\u52a8\u8bcd+\u52a8\u8bcd\u539f\u5f62\u201d\u662f\u56fa\u5b9a\u642d\u914d\u3002
\u8fd9\u4e2a\u662f\u865a\u62df\u8bed\u6c14\u5728\u975e\u771f\u5b9e\u6761\u4ef6\u53e5\u4e2d\u7684\u8fd0\u7528
\u4e0e\u73b0\u5728\u7684\u4e8b\u5b9e\u76f8\u53cd if \u6761\u4ef6\u53e5\u4e2d\u7684\u8c13\u8bed\u52a8\u8bcd\uff1a \u52a8\u8bcd\u7684\u8fc7\u53bb\u5f0f \u4e3b\u53e5\u7684\u8c13\u8bed\u52a8\u8bcd\uff1ashould,would,could,might +\u52a8\u8bcd\u539f\u5f62
\u4e0e\u8fc7\u53bb\u7684\u4e8b\u5b9e\u76f8\u53cd if \u6761\u4ef6\u53e5\u4e2d\u7684\u8c13\u8bed\u52a8\u8bcd\uff1ahad+done \u4e3b\u53e5\u7684\u8c13\u8bed\u52a8\u8bcd\uff1a
should,would,could,might +have +done
\u4e0e\u5c06\u6765\u7684\u4e8b\u5b9e\u76f8\u53cd if \u6761\u4ef6\u53e5\u4e2d\u7684\u8c13\u8bed\u52a8\u8bcd\uff1a\u52a8\u8bcd\u7684\u8fc7\u53bb\u5f0f\u6216should+\u52a8\u8bcd\u539f\u5f62\u6216were to+\u52a8\u8bcd\u539f\u5f62 \u4e3b\u53e5\u7684\u8c13\u8bed\u52a8\u8bcd\uff1ashould,would,could,might +\u52a8\u8bcd\u539f\u5f62
与现在的事实相反 if 条件句中的谓语动词： 动词的过去式 主句的谓语动词：should,would,could,might +动词原形
与过去的事实相反 if 条件句中的谓语动词：had+done 主句的谓语动词：
should,would,could,might +have +done
与将来的事实相反 if 条件句中的谓语动词：动词的过去式或should+动词原形或were to+动词原形 主句的谓语动词：should,would,could,might +动词原形
should+have+done表示要做但事实上却没有做的事
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绛旓細琛ㄧず鎺ㄦ祴宸茬粡瀹屾垚鐨勫姩浣溿傛瘮濡侶e may have written the article.浠栧彲鑳藉凡缁忓啓瀹屼簡鏂囩珷
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绛旓細鈥 Oh, he ___ have been a very smart boy then. 锛04 鍏ㄥ浗IV锛堿. could B. should C. might D. must 绛旀涓 D銆傝〃鎺ㄦ祴鐨勭敤娉曘傚彞鎰忥細鈥斺旀堡濮嗗緢骞磋交鐨鏃跺灏卞ぇ瀛︽瘯涓氫簡銆傗斺斿摝锛屼粬鑲畾鏄竴涓緢鑱槑鐨勭敺瀛╁効銆5. He ___ have completed his work; otherwise, he wouldn't be en...
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绛旓細杩欐槸鎯呮佸姩璇嶈〃绀烘帹娴嬶紝瀵硅繃鍘讳簨鎯呯殑鎺ㄦ祴 鐢ㄦ儏鎬佸姩璇+have+done鐨勫舰寮忥紝鏄浐瀹氱敤娉
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绛旓細have鐨勭敤娉 have鐢ㄦ硶灏忕粨 涓銆乭ave浣滃疄鎰忓姩璇.1.琛ㄧず鈥滄湁鈥濈殑鎰忔.Look,I have wings,just like you.He had fair hair and blue eyes.銆旀敞1銆曪細鍏跺惁瀹氬拰鐤戦棶褰㈠紡鍙樺寲,鍦ㄧ編鍥介氬父鐢ㄥ姪鍔ㄨ瘝do.銆旀敞2銆曪細鍦ㄨ嫳鍥藉彛璇腑甯哥敤have got浠ｆ浛have.Look,can鈥檛 you see I've got teeth,too.I haven't...
