④be doing...when...正在做……这时……
不带to的动词不定式作表语的情况
句3中all 后面是省略了that的定语从句,当前面有实义动词do的某种形式时,be后用不带to的动词不定式作表语。
Ⅳ.单元语法→识记·思考·
虚拟语气
单句语法填空
1.If she ________(be) here this evening,we ________(play) cards.
2.The flood ________(cause) great damage to the people if we ________(not,build) so many reservoirs.
3.If you ________(speak) to him last time you saw him,you ________(know) what to do now.
4.If you ________(hesitate) this moment,you ________(suffer) in future.
5.*I wish I ________(have) a chance to pay a visit to the moon.
答案 1.were;would play 2.might have caused;hadn't built 3.had spoken;would know 4.hesitated;might suffer 5.would have
,【联想·积累】
wish后跟宾语从句小结
wish后跟宾语从句,意为“但愿……;希望……;要是……就好了”,往wish 后宾语从句中的谓语动词形式如下:
did/were:表示与现在事实相反的愿望
had done/been:表示与过去事实相反的愿望
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