She could not have believed it but that she saw it. 若非亲眼所见，她是不会相信的。

　　句型38

　　在动词insist(1坚持做某事)，order, command(2命令), advise, suggest, propose(3建议做某事)，demand, require, request, ask(4要求)等表示建议、命令、要求的名词性从句中谓语动词要用虚拟语气。基本句型：主语+ (should) + 动词原形。另外像decide, desire, intend, recommend等也要接(should)+动词原形结构。

　　[例句]

　　Mother insists that Tom (should) go to bed at nine oclock.(宾语从句)

　　We suggested that the meeting (should) be held at once.

　　It was required that the crops (should) be harvested at once.(主语从句)

　　The suggestion that he (should) be invited was rejected.(同位语从句)

　　That is their demand that their wages (should) be increased.(表语从句)

　　[注意1]

　　advice, suggestion, order, demand, proposal, request, desire, command, decision, requirement等名词引导的同位语从句或表语从句，谓语动词用 (should) + 动词原形。

　　[注意2]

　　Its suggested/ advised/ demanded/ordered/requested/proposed/required/desired等结构后的主语从句中，谓语动词用(should) + 动词原形。

　　[注意3]suggest意思是表明，暗示;说明insist意思是坚持观点，坚持看法时，句子不能用虚拟语气。

【高考英语必考40个重要句型精讲 八】相关文章：

★ 高考英语必考40个重要句型精讲4

★ 高考英语必考40个重要句型精讲1

★ 历届高考英语语法分类汇总 冠词 （2）

★ 高考英语语法复习 如何搭配英语词汇

★ 高考英语必考40个重要句型精讲3

★ 高考英语语法非谓语动词练习题

★ 高考英语必考40个重要句型精讲5

★ 2015高考英语备考必备句式2

★ 2015年高考英语备考必备句式1

★ 高考英语语法句子讲解：疑问句