( )20.— Jim,come back.Your new book is still on the sofa.— Oh,thank you.I have forgotten __A.to put B.put C.putting D.to putting( ) 1.Susan be here now because she has just gone to New York.A.mustn’t B.can’t C.needn’t D.may not选什么

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( )20.— Jim,come back.Your new book is still on the sofa.— Oh,thank you.I have forgotten __A.to put B.put C.putting D.to putting( ) 1.Susan be here now because she has just gone to New York.A.mustn’t B.can’t C.needn’t D.may not选什么
( )20.— Jim,come back.Your new book is still on the sofa.— Oh,thank you.I have forgotten __
A.to put B.put C.putting D.to putting
( ) 1.Susan be here now because she has just gone to New York.
A.mustn’t B.can’t C.needn’t D.may not
选什么

( )20.— Jim,come back.Your new book is still on the sofa.— Oh,thank you.I have forgotten __A.to put B.put C.putting D.to putting( ) 1.Susan be here now because she has just gone to New York.A.mustn’t B.can’t C.needn’t D.may not选什么
20.选A,forget to do sth忘记去做某事(事情还没有做),这里说书还在沙发那里,所以应该是这个
另外还有for get doing sth忘记做过了某事(事情已经做了),这是forget 的用法,类似的词语还有remember to do sth
remember doing sth
1.选B 这道题是考情态动词 must表示“必须” mustn't是“禁止” can表示能力上可以,也表示一种理论上的可能,在疑问句和一些否定句中是表示可能,can't在这里就是不可能的意思了,这个很特殊,记住了会很有用.need 表示需要,needn't表示不必要不需要 may表示可能,may not表示可能不(是)
这里题干说她已经去了纽约,所以她不可能在这里.

A
忘记没做过的某事 用forget to do sth
忘记做过的某事 用forget doing sth
B 不可能

选A have forgotten to do 忘了还没做的事 have forgotten doing是忘了已经做过的事
B和D没有这样的搭配

第二道题选B

1. A have forgotten to do 忘了还没做某事
have forgotten doing是忘了已经做过某事
2. B mustn't 意思是“不准,禁止”,
can't 意思是“不可能”
needn't意思是“不需要”
may not 意思是 “不一定”

C