1I'vetriedseveraltimes,butthecarjust.Awon'tstartBdoesn'tstart（选A为什么要用将来时,不是应该现在时吗?现在也不能发动啊?）2Asaresultofdestroyingtheforests,alargeofdeserthascoveredtheland.A

Question

1 I've tried several times ,but the car just___.
A won't start B doesn't start
（选A 为什么要用将来时,不是应该现在时吗?现在也不能发动啊?）
2 As a result of destroying the forests ,a large ___ of desert has covered the land .
A number B quantity
(选B 这两个词怎么区分?)
3 It seems to me that what Lucy saw and heard __very interesting.
A was B is
（选A 为什么前面是seems 后面却用过去时,这个要怎么看时态?）
4 Every means __tried ,but in wain.
A has been B is
(选A 为什么要选A?)
5 There are __ flowers shown in the park and __people go to have a look.
A varieties of,various B a plenty of,many
C various,many a D quite a few ,quite a little
(选A 完全不知道这四个选项里的词组怎么区分……)
6 That they were wrong in these matters __mow clear to us all.
A is B are
(选A 不是matters 为什么不用复数?)
7 It was in the lab__was taken care of by Jack that they did the experiment.
A which B where
(选A 我怎么看都觉得选B……后面的句子不少成分啊……)

Answer 1

1.will的情态动词的用法.意思“愿意；肯”.
2.a quantity of可以修饰可数和不可数名词.而a number of只能接可数.
3.从句中时态一致.what Lucy saw and heard __very interesting.出现saw后面理所当然也跟着用过去时咯.前面用 it seems to me是现在的想法,从句中发生的行为却是在过去.所以时态并不矛盾.
4.句子意思“所有的方法都被尝试过了,但是徒劳无功”.has been tried是现在完成时的被动式.另外最后一个词应该是 vain 才对哦.（vain 徒劳无功的）
5.译“花园里展示着许多种花,各种各样的人前去参观”
a variety of ；varieties of ；various——"各种个样的；种种的"
plenty of——“许多的,大量的”后接可数或不可数名词,且前面不能用冠词a.（所以B排除）
many a——“许多的”后接单数名词.many后面只能接可数名词.（所以C排除）
quite a few；quite a little ——“相当多的”前者加可数,后者加不可数（所以D排除）
综合来看只能选A
6.That they were wrong in these matters 是一个主语从句,看作一个整体意指“这件事”（相当于It）所以后面用is + now clear to us all.
7.which引导定语从句,说明the lab.而整个句子是It was…that…的强调句型.注意分出句子主干.
解答完发现才十分哦.有点吝啬的说.不过还是希望你继续学好英语哦!以上有不明白的可以继续问我或者问你们老师啊.