应该不怎么难哈1.I'm sorry you've been waiting so long,but it'll still be some time _____ Brian gets back.A.before B.sinceC.tillD.after2.-Must I get through the business in one evening?-No,you ___A.mustn'tB.don't have to解释第一个就可以

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应该不怎么难哈1.I'm sorry you've been waiting so long,but it'll still be some time _____ Brian gets back.A.before B.sinceC.tillD.after2.-Must I get through the business in one evening?-No,you ___A.mustn'tB.don't have to解释第一个就可以
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应该不怎么难哈1.I'm sorry you've been waiting so long,but it'll still be some time _____ Brian gets back.A.before B.sinceC.tillD.after2.-Must I get through the business in one evening?-No,you ___A.mustn'tB.don't have to解释第一个就可以
应该不怎么难哈
1.I'm sorry you've been waiting so long,but it'll still be some time _____ Brian gets back.
A.before
B.since
C.till
D.after
2.-Must I get through the business in one evening?
-No,you ___
A.mustn't
B.don't have to
解释第一个就可以了 第一个不选C 选A
分我提高了

应该不怎么难哈1.I'm sorry you've been waiting so long,but it'll still be some time _____ Brian gets back.A.before B.sinceC.tillD.after2.-Must I get through the business in one evening?-No,you ___A.mustn'tB.don't have to解释第一个就可以
A 后半句意思是在Brian回来之前,他会是一段很长的时间.since 自从...时候,不和意思.after在...之后不和逻辑,翻译不对.till:用于句中,直到...时候,动词是延续性动词,get是瞬间性动词,所以till不对.选A
B must的否定回答是 don't have to

1.C.till
2.don't have to(needn't)

C
B
A.mustn't是“禁止,不许,不准。一定不要,一定不许”的意思

1.A(好难解释的,如果一定要解释的话,就是前文有说明时间,根据中文意思来翻的话,就用before)
2.B(must的否定形式是needn't.不可以用mustn't)

。。。第一个问题,通过翻译可以知道 我很抱歉然你等了这么久,但在Brian回来之前,你仍然要等一段时间。语感问题,一般就不会选c了。。b跟d只要你懂翻译就知道不符合了。。
第二个选b。我记得以前老师说过,一般用must作为开头的问题都不会回答mustn't的。。。...

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。。。第一个问题,通过翻译可以知道 我很抱歉然你等了这么久,但在Brian回来之前,你仍然要等一段时间。语感问题,一般就不会选c了。。b跟d只要你懂翻译就知道不符合了。。
第二个选b。我记得以前老师说过,一般用must作为开头的问题都不会回答mustn't的。。。

收起

1.因为句子里有still,所以意思应该是从现在到Brian回来之前的这一段时间。
应选A。till后跟的应该是Brian已经回来了,故错。B、D不用解释了吧。
2.mustn't是禁止的意思。

确实很难解释. 要完全按照字面翻译的话就是在brian回来前还有一些时间呢. 也可以算是个固定句式吧.
一般都是 some time before someone does something.

1、根据语境,应该是在……之前,故选A。而C是“直到”的意思。
2、选B。A是命令的语气,一定不能的意思,B才是没必要的意思。

C
B
Abefore一般用在过去时