概要：6. It\'s the third time that Kate has been ill, ____ ? A. isn\'t it B. hasn\'t she C. isn\'t she D. hasn\'t it〖解析〗陈述部分是主从复合句，变成附加疑问句时，一般应与主句的主语和谓语一致。that Kate has been ill是定语从句。it\'s是it is的缩写。故正确答案为A。不过，要提醒同学们注意的是：当陈述部分的主句是I think, I believe, I guess等结构时时， 附加疑问句要与后面的从句主谓一致。此时， 还要特别注意否定转移现象。 如：I don\'t think he is right, is he ?7. —What ____ it be ?— It ____ be a mail box, for it is moving . It ____ be a car . A. can, can\'t, mus
高二英语第十五单元A famous detective（著名侦探）,标签：高二英语选修7教案,高二英语下册教案,http://www.67jx.com6. It\'s the third time that Kate has been ill, ____ ?
A. isn\'t it B. hasn\'t she C. isn\'t she D. hasn\'t it
〖解析〗陈述部分是主从复合句，变成附加疑问句时，一般应与主句的主语和谓语一致。that Kate has been ill是定语从句。it\'s是it is的缩写。故正确答案为A。不过，要提醒同学们注意的是：当陈述部分的主句是I think, I believe, I guess等结构时时， 附加疑问句要与后面的从句主谓一致。此时， 还要特别注意否定转移现象。 如：I don\'t think he is right, is he ?
7. —What ____ it be ?
— It ____ be a mail box, for it is moving . It ____ be a car .
A. can, can\'t, must B. can, can, must
C. can, mustn\'t must D. must, mustn\'t can
〖解析〗考查情态动词can, must的用法。must在表示“推测”时，只能用于肯定句中， 不能用于否定句中。can表推测时，可用于否定句和疑问句中，故先排除C、D，从for it is moving，可知第二空应填can\'t（不可能），否则与第三空会自相矛盾。正确答案为A。
8. The fire ____ at 11 last night, but after the firefighters came, it ____ .
A. was broken out, was died out B. was broken out, died out
C. broke out, was died out D. broke out, died out
〖解析〗英语中有些动词或短语动词是不及物的，不能用于被动语态，同学们要一一牢记。常见的有：happen, last（持续），appear, take place（发生），break out （爆发），die out（熄灭），belong to（属于）。正确答案为D。
9. Whether or not it ____ tomorrow, we\'ll set out on time .
A. rains B. rained C. will rain D. should rain
〖解析〗whether or not 意为“是否，无论是不是，不管”，在此引导让步状语从句，从句谓语应用一般现在时代替一般将来时。如:Whether or not it rains, I will give a party tomorrow.不管下雨不下雨，明天我都要举行宴会。正确答案为A。
10. My friend John ____ while he ____ his bicycle and hurt himself .
A. had fallen, rode B. had fallen, was riding
C. fell, was riding D. fell, were riding
〖解析〗分析句子结构不难发现，第一空是和and hurt himself并列的，hurt在此时过去式，故第一空填fell。ride在while 引导的从句中表示进行性动作， John 就是在“was riding”中fell的。故正确答案为C。
11. I ____ her if I thought she would understand .
A. would tell B. will tell
C. would have told D. tell
〖解析〗这是考查与现在事实相反的虚拟语气。 条件从句用动词的过去式， 主句用would＋动词原形。该句相当于：Because I don\'t think she will understand, I will not tell her .故选A。
12. The reason why she couldn\'t come to the meeting was ____ .
A. because she had not been invited B. which she had not been invited
C. that she had not been invited D. because of her not having been invited
〖解析〗主句是reason时，其表语从句通常不用because引导，而用that引导。先排除A、D。连接代词which引导表语从句时，要在从句中担任成分，因此选项B也不对， 正确答案非C莫属了。
13. ____ others say, the professor is sure that his theory is correct .
A. No matter B. It doesn\'t matter C. Whatever D. What
〖解析〗Whatever=no matter what 无论什么，whenever=no matter when 无论什么时候；however=no matter how无论怎样，它们都可引导让步状语从句。如：Whatever (= No matter what) you do, don\'t keep him waiting !无论你做什么，都不要让他久等！故选C。
【创新园地】
趣味句型变换
1. 不但学生们而且老师也都喜欢运动。
Not only the students but also the teacher is fond of sport .
The teacher____ ____ ____the students is fond of sport .
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