虚拟语气的语法问题？ 英语语法问题（虚拟语气） 由于字数问题，所以放在问题描述下面...
\u4e00\u4e2a\u865a\u62df\u8bed\u6c14\u5012\u88c5\u7684\u8bed\u6cd5\u95ee\u9898Should you experience any difficult, do not hesitate to contact one of my staff members.
\u4e00\u3001\u53e5\u5b50\u4f7f\u7528\u8bed\u6c14\u7684\u89e3\u91ca\uff1a
\u8fd9\u662f\u4e2a\u201c\u865a\u62df\u6761\u4ef6\u53e5 + \u7948\u4f7f\u53e5\u201d\u7684\u590d\u5408\u53e5
1. \u6761\u4ef6\u865a\u62df\u8bed\u6c14\u5728\u8fd9\u91cc\u662f\u4e00\u79cd\u5ba2\u5957\u8bed\uff0c\u5373\u4e0d\u5f3a\u6c42\u5bf9\u65b9\u975e\u5f97\u63a5\u53d7 \u3002
2. \u7948\u4f7f\u53e5\u4e5f\u662f\u4e00\u79cd\u5ba2\u6c14\uff0c\u8868\u793a\u8bf7\u6c42
\u4e8c\u3001\u5173\u4e8e\u6761\u4ef6\u865a\u62df\u7684\u5012\u88c5\uff1a
\u6761\u4ef6\u865a\u62df\u53e5\u5e38\u53ef\u4ee5\u7528\u5012\u88c5\u8bed\u5e8f\u8868\u793a\u3002\u5012\u88c5\u65f6\u53ea\u8981\u7701\u53bb if \u518d\u628a\u52a9\u52a8\u8bcd\u6216\u60c5\u6001\u52a8\u8bcd\u63d0\u524d\u653e\u5728\u4e3b\u8bed\u524d\u5373\u53ef\uff0c\u5982\u672c\u53e5\uff1a
\u63d0\u524d should\uff1aShould you experience any difficult = If you should experience any difficult, \u5047\u5982\u4f60\u4eec\u89c9\u5f97\u6709\u4ec0\u4e48\u96be\u9898\u7684\u8bdd\uff0c
\u518d\u5982\uff1a
* \u63d0\u524d were\uff1aWere you to be here tomorrow, ... = if you were to be here tomorrow, ... \u5047\u5982\u4f60\u660e\u5929\u4f1a\u5728\u8fd9\u91cc\u7684\u8bdd\uff0c...
* \u63d0\u524d did\uff1aDid he come now\uff0c... = If he came now,... \u5982\u679c\u4ed6\u73b0\u5728\u5c31\u6765\u7684\u8bdd\uff0c...
* \u63d0\u524d had\uff1aHad the students finished their homework on time, ... = If the students had finished their homework on time, ...\u5982\u679c\u5b66\u751f\u539f\u6765\u5c31\u6309\u65f6\u5b8c\u6210\u4e86\u4f5c\u4e1a\u7684\u8bdd\uff0c...
I thought \u8fd9\u4e2a\u662f\u8fc7\u53bb\u53d1\u751f\u7684\uff0c\u4e00\u822c\u8fc7\u53bb\u65f6\uff0c\u662f\u771f\u5b9e\u53d1\u751f\u7684\u3002
childern would be sleeping \u8fd9\u4e2a\u662f\u865a\u62df\u7684\uff0c\u5047\u8bbe\u51fa\u6765\u7684\u3002
they were awake \u8fd9\u4e2a\u548c thought\u4e00\u6837\u7684\uff0c\u53d1\u751f\u5728\u8fc7\u53bb\u7684\u4e00\u822c\u8fc7\u53bb\u65f6\uff0c\u4e5f\u662f\u771f\u7684\u53d1\u751f\u7684\u3002
\u6700\u540e\uff0c
第一种情况：这是虚拟语气的一种特殊形式。
虚拟语气的if从句中，若有过去完成时助动词had或表“万一”的助动词should或是were出现时，可将这些词置于主语前，而将if省略。
例如：If he had done it, he would have felt sorry.
= Had he done it, he would have felt sorry.（赖氏经典英语语法）
那么 If the researchers had been given enough money, the researchers would have been able to discover more in this field. 可以缩写为
Had the researchers been given enough money,......显然没有正确答案。
第二种情况：分词结构-状语从句化简法:
once、when、while、if、unless、though等连词所引导的状语从句中，若主语与主句中的主语相同，亦可化简为分词结构。（赖氏经典英语语法）
那么 If the researchers had been given enough money, the researchers...... 可化简为
If given enough money, the researchers....
没有正确答案。
所以猜测你的题错了，少了一个If，答案选C，对么？
记错了吧？
主语would have done, 从句had done
这里的given就相当于If the reserchers had been given...
过去分词短语作状语时，表示被动。可作时间、条件、原因状语。
又如
Given more money, I would buy a car.
=If I were given more money, I would buy a car.（现在相反）
Given more money, I would hve bought a car.
=If I had been given more money, I would have bought a car.（过去相反）
是的，你是对的。根据句意可以判断，前一句的时态应该是过去式，而且是从句，所以用could/should had done，很显然这里省略了，所以用had given
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绛旓細濡傦細Hemighthavebeenkilledbutforthearrivalofthepolice.瑕佷笉鏄瀵熸潵浜嗕粬鏈彲鑳借鏉姝汇5銆佸湪鏌愪簺琛ㄧず绁濇効鐨勫彞瀛愰噷闇瑕佺敤铏氭嫙璇皵锛屽锛歁ay you be happy all your life!浠ヤ笂灏辨槸鍏充簬鑻辫鍥涚骇璇硶鐭ヨ瘑鐨勫垎浜紝甯屾湜瀵规兂瑕佽冨洓绾х殑灏忎紮浼翠滑鏈夊仛甯姪锛屾兂瑕佷簡瑙ｆ洿澶氱浉鍏冲唴瀹癸紝娆㈣繋鍙婃椂鍏虫敞鏈钩鍙!
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