We didn"t finish the work in time. You____us since you were there.A)might help B)should help C)could have helped D)must have helped

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We didn"t finish the work in time. You____us since you were there.A)might help B)should help C)could have helped D)must have helped
We didn"t finish the work in time. You____us since you were there.
A)might help B)should help C)could have helped D)must have helped

We didn"t finish the work in time. You____us since you were there.A)might help B)should help C)could have helped D)must have helped
正确答案应该是C选项.表示本能帮助我们却没有帮助.
英语中,表达与过去事实相反的虚拟可以用情态动词过去式+have done的形式.
如could have done;本能做而没做.might have done本可能做而没做.
should have done 本应该做而没做.must have done本一定要做而没做.
而在情态动词后加not变为否定时,表示本没有...却做了.
如couldn't have done 本不能做而做了.shouldn't have done 本不该做而做了.

c 你本该帮帮我们的既然你在那里

C:我们没能及时完成工作。你当时在那里,本来可以帮助我们的(但你没有)。
could have helped=本来可以提供帮助

C. 对过去的虚拟,事实上没有帮助,所以选择C

C

We didn't have enough time.We couldn't finish the work.(合并句子) We didn'We didn't ___ ___ ___ ___ finish the work. We didn't have enough time.We couldn't finish the work .(合并句子) ( ) enough time ,we didn't finish the work.( ) enough time ,we didn't finish the work.括号内的there not beingnot为什么放中间 We couldn't finish the work if you didn't help us.We couldn't finish the work ____ ____ help.改为同义句 We didn't have enough people to do the work,so we couldn't finish the work on time.合并句子 We can't finish the work a____ The boss didn’t let the workers have a rest.变被动We can go home when we finish our homeworkSometimes I see her dance in the garden The teacher said that we should finish our homework by ourselves , _____ ?A. didn't he B. shouldn't we选什么,解释一下 You didn't finish the project.I didn't finish the project,either用neither...nor合并句子 We worked all day,_______ we didn't finish it.A or B also C but I didn't finish the work on time.Alice didn't didn't finish it,either(合并为一句) We didnt finish the work in time. You____us since you were there.A)might help B)should help C)could have helped D)must have helped Without your help, we ____ this task.A. don't finish B. will not finish C. didn't finish D. would not have finished为什么选D? Without your help,we ____ this task.A.don't finish B.will not finish C.didn't finish D.would not have finished without you help .we---this taskA.don't finish B.will not finish C.didn't finish D.would not have finished选哪个 麻烦讲详细点 not until 后面用什么时态?1.I didn't watch tv until__________(finish) my homework last weekend2.-Shall we go to the park now?-Not until I________(finish)my homework.用完成时和一般式有神马区别? he did't plan his time well .he didn't finish the work合并 He failed to finish the work on time.=He didn't _______ ________ to finish the work on time.