首先在这里先说明一下情况,因为我的错题是考试的历年真题来的.同时这次的考试对我来说很重要,希望各位前辈能够帮助我,谨慎作答,因为我会完全相信你们的答案的!（题目比较多,请不要只

首先在这里先说明一下情况,因为我的错题是考试的历年真题来的.同时这次的考试对我来说很重要,希望各位前辈能够帮助我,谨慎作答,因为我会完全相信你们的答案的!（题目比较多,请不要只
首先在这里先说明一下情况,因为我的错题是考试的历年真题来的.同时这次的考试对我来说很重要,希望各位前辈能够帮助我,谨慎作答,因为我会完全相信你们的答案的!（题目比较多,请不要只对正确答案进行讲解,麻烦将其他的选项的用法等分析清楚吧,怎么区分用法）谢谢!
11.“I’m going to the post office.””______you’re there,can you get mesome stamps?”
A.As B.While C.Because D.If
--我选了A,
12.The famous scientist grew up________hewas born and in 1930 he came to Shjanghai.
A.when B.whenever C.where D.wherever
--我选了A,
13.She found her calculator_______she lostit.
A.where B.while C.in which D.that
--我选了D,
14.The vistor asked to have his picturetaken_____stood the famous tower.
A.that B.at which C.when D.where
--我选了A,
15.Why do you want a new job_______you’vegot such a good one already?
A.that B.where C.which D.when
--我选了A,
16.He was about to tell me thesecret_______someone patted him on the shoulder.
A.as B.until C.when D.while
--我选了A,
17.The fire went on for quite sometime______it was brought under control.
A.when B.since C.after D.before
--我选了A.
18.Someone called me up in the middle ofthe night,but they hung up_______I could answer the phone.
A.as B.since C.until D.before
--我选了C,
19.“Was his father very strict with him when he was at school?“
“Yes.He had never praised him_______he became one of the top student in hisgrade.”
A.after B.unless C.until D.when
--我选了B,
20.Mary clapped her hand over hermouth_____she realized what she had said.
A.while B.as soon as C.suddenly D.then
--我选了B,

首先在这里先说明一下情况,因为我的错题是考试的历年真题来的.同时这次的考试对我来说很重要,希望各位前辈能够帮助我,谨慎作答,因为我会完全相信你们的答案的!（题目比较多,请不要只

我把你的复制下来然后删掉了答案做了一次,结果错了最后一题.我说一下我是怎么想的吧~

11.“I’m going to the post office.””______you’re there,can you get mesome stamps?”
A.As    B.While     C.Because    D.If

“我要到邮局去了”__你到那儿的时候,给我拿些邮票可以吗.明显这里要添一个表示“当”的意思的词.A、B都可以.但是while 后面接延续性行为,但这个动作肯定和主句动作时间不一样长.如：he was talking to me while he was watching the tv.应该说“看电视”比“谈话”时间长.而as通常两个动作一直相随,很可能时间相同.如：he was thinking of a question as watching the tv.这两个动作就是一直相随的.
12.The famous scientist grew up________hewas born and in 1930 he came toShjanghai.
A.when    B.whenever    C.where   D.wherever
 这个著名的科学家在他出生的地方长大.所以填where,wherever的话是无论何地的意思,放上去说不通.
13.She found her calculator_______she lostit.
A.where       B.while    C.in which    D.that
 这句话的话在没有选择答案的时候不好直接翻译.可以先分析句子成分.要填的连接词前面是"calculator",看到这个词的话我们第一时间想到的话that,但是在连接词后面的是“she lost it”,如果这里用that的话后面的就不能用it（因为that已经有it的意思了）,所以D排除.在看B,代进去后翻译：当她丢了计算机的同时,她找到了,这个逻辑不对= =,B排除.而AB意思都是差不多,但是注意如果选in which的话显然不恰当.The earth in which we live needs us to protect
这是一个例句,虽然in which有where的意思,但是这句中in which=in the earth.而把in which代会原句中就会变成了in the calculator,显然不对.所以答案是A,翻译为：她在丢失计算机的地方找回了她的计算机

14.The vistor asked to have hispicturetaken_____stood the famous tower.
A.that   B.at which    C.when   D.where
在伫立着知名的铁塔前,这名游客叫别人帮他拍个照.这里应该是一个地点状语吧,AC都可以排除.Bat which的话就要看at是否可以和前面的部分搭配上（参考13题）,明显不可以.所以选where 
15.Why do you want a new job_______you’vegot such a good one already?
A.that   B.where     C.which   D.when
 当你有一份这么好的工作的时候,为什么你想着转工呢?这里是时间状语所以选when.如果选that的话那么为什么不可以选which呢（某些特殊情况除外）?所以that which都可以排除了~
16.He was about to tell me thesecret_______someone patted him on the shoulder.
A.as     B.until      C.when     D.while
当别人拍他肩膀的时候,他正打算告诉我些秘密,这里的话其实就是when和while的选择.when,while都有“当……时候”的意思.

when既可表示某一点时间,也可以表示某一段时间 .
在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生.
例如：

I was just reading a book when she came into my room.
她走进我房间时,我正在看书.
while只能表示某一段时间,不能表示某一点时间.在while引导的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在.
例如：
1、While Jim was mending his bike, Lin Tao came to see him.
正当吉姆修自行车时,林涛来看他. 

这里表示的是一个时间点,所以when更恰当.
17.The fire went on for quite sometime______it was brought under control.
A.when    B.since    C.after   D.before
翻译得： 火烧了好一会,火得到控制.明显“火烧了好一会”发生在“火得到控制”之前的,是一个时间的先后关系,所以填before

18.Someone called me up in the middle ofthe night,but they hung up_______Icould answer the phone.
A.as    B.since   C.until   D.before
 翻译：有人在半夜打给我,但是他们出去完了__我接电话的时候.因为句子中有“but”转折,所以要特别注意.经过分析之后可以知道我接电话的时候他们已经出去玩了.所以也是填before,也是一个时间先后关系.并不是说他们等到我接电话的时候才出去玩.（因为有个but）
19.“Was his father very strict with him when he was at school?“
“Yes.He had never praised him_______he became one of the top student inhisgrade.”
A.after    B.unless    C.until    D.when
 这里是固定搭配：not（或者否定词）,until,直到,才
20.Mary clapped her hand over hermouth_____she realized what she had said.
A.while   B.as soon as  C.suddenly    D.then

这个还得让我想想= =,20题我也认为是B耶QAQ