.大哥大姐帮帮小弟吧..25.But for your help we ______ in the experiment.A.hadn’t had succeeded B.didn’t have succeededC.couldn’t have succeeded D.can’t have succeeded26.-- "Why didn't you buy a new car?" --"I would have bought one if I

.大哥大姐帮帮小弟吧..25.But for your help we ______ in the experiment.A.hadn’t had succeeded B.didn’t have succeededC.couldn’t have succeeded D.can’t have succeeded26.-- "Why didn't you buy a new car?" --"I would have bought one if I
.大哥大姐帮帮小弟吧..
25.But for your help we ______ in the experiment.
A.hadn’t had succeeded
B.didn’t have succeeded
C.couldn’t have succeeded
D.can’t have succeeded
26.-- "Why didn't you buy a new car?"
--"I would have bought one if I__________enough money."
A.had
B.have had
C.would have
D.had had
27.His advice that we_____________the other groups to a friendly competition was refused.
A.challenge
B.shall challenge
C.would challenge
D.will challenge
28.If a better material ________,the strength of the part would have been increased.
A.had been used
B.had been using
C.being used
D.using
29.They made a request that the problem ___________ at the meeting.
A.discussed
B.is discussed
C.would be discussed
D.be discussed
30.It is demanded that he____________the truth.
A.tells
B.will tell
C.told
D.tell
31.How well the coat fits!
A.陈述句
B.疑问句
C.祈使句
D.感叹句

.大哥大姐帮帮小弟吧..25.But for your help we ______ in the experiment.A.hadn’t had succeeded B.didn’t have succeededC.couldn’t have succeeded D.can’t have succeeded26.-- "Why didn't you buy a new car?" --"I would have bought one if I
25 C but for 在句中,要用虚拟语气.
26 D 对过去的事情进行假设,用had
27 A 建议,命令,要求等次放在句中用虚拟语气
28 A 对过去的事情进行假设,用had
29 D 建议,命令,要求等次放在句中用虚拟语气,问题不能自己讨论,所以是被讨论 be discussed
30 D 建议,命令,要求等次放在句中用虚拟语气
31 D 这个是以how引导的感叹句,结构：How+形容词（或副词）+主语+谓语+其它成份.还有一种感叹句式以what引导的.结构：what+(a/an)+形容词+名词+主语+谓语+其它成份.

CDAADDD

25.c 虚拟(but for)作为标志
26.d 也是虚拟明显的if虚拟句
27.a 看到advise,suggest,order等也是虚拟句，从句中用（should） do
28.a 先判断出虚拟，在判断出被动
29.d
30.d
31.d
obviously,你没有掌握好虚拟这一块
我简单的说一下
present if从...

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25.c 虚拟(but for)作为标志
26.d 也是虚拟明显的if虚拟句
27.a 看到advise,suggest,order等也是虚拟句，从句中用（should） do
28.a 先判断出虚拟，在判断出被动
29.d
30.d
31.d
obviously,你没有掌握好虚拟这一块
我简单的说一下
present if从句中用was/were/did ; if主句中用would/could/might等+do
past if从句中用had done ; if主句中用would/could/might等+have done
future if从句中用were to do/should do/did; if主句中用would/could/might等+do
其实就是往后推一个时态

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