2014-11-10 893400400 关注
1.when引导状语从句
⑴当…时候（引导时间状语从句，适用于“主将从现”）；
①be about to …when… 要去做…就在这时突然…；
②be doing sth. … when suddenly … 当正在做某事，就在这时候（突然）发生…；
③be on the point of doing sth. when … 正要去做…突然…；
④had +过去分词 … when … 刚刚……，这时<突然>……；
⑵如果，既然；
⑶尽管，虽然（引导让步状语从句）；
⑷hardly / scarcely …when…=no sooner … than…一…就…（若hardly / scarcely / no sooner放在句首，从句用倒装，且一般情况都用过去完成时态）；
⑸There is a time when…有一段时期……；
They were about to start when it rained. 他们刚要出发，天就下起雨来
There was a time when the river was very clean.有一段时期，这条河流很清澈。
⑹When it comes to <doing> sth. 意为“当谈到（做）…的时候”，
【点题1】（2014江西）It was the middle of the night ________ my father woke me up and told me to watch the football game.
A. that B. as C. which D. when
答案：D。本题考查状语从句。依据句意理解，设空处引导时间状语从句，则选项D符合题意。句意：当父亲叫醒我，告诉我观看足球比赛的时候，已经是午夜了。本题易误选A项，认为考查“强调句型”；若题干中was后加入介词in，则选项A正确。
【点题2】（2013陕西）Jim_______ a late night film at home when, right in the middle of a thrilling scene, the television went blank.
A. watched B. had watched
C. was watching D. would be watching
答案：C。本题考查动词的时态。由题干句子结构可知，此处考查常用句型：be doing sth. when ….正在做某事，就在这时…；依据从句时态（went）与主句时态的一致性，则选项C符合题意。句意：吉姆正在家里看一部午夜电影，就在看到一个扣人心弦的场景时，电视机白屏了。
2.when引导定语从句，其先行词作时间状语；
【点题3】（2014浙江）I didn't become a serious climber until the fifth grade, ______ I went up to rescue a kite that was stuck in the branches of a tree.
A. when B. where
C. which D. why
答案：A。本题考查定语从句。由题干可知，先行词为the fifth grade，代入定语从句中，即I went up to rescue a kite in the fifth grade.由此可见，先行词在定语从句中作状语，且先行词指“时间”，故选项A符合题意。句意：直到五年级的时候，我才成为一名热衷于爬山的人，那时候，我曾爬到树上去拯救一只困在树枝上的风筝。
【点题4】（2014湖南）I am looking forward to the day_________ my daughter can read this book and know my feelings for her.
A. as B. why C. when D. where
答案：C。本题考查定语从句。分析题干，the day作为先行词，在定语从句中作时间状语，则选项C符合题意。句意：我正期待着那一天的到来，那时候我的女儿可以读这本书并且（能够）了解我对她的感情。
3.when亦可以用于名词性从句中，指“时间”；追答
1.while 作连词
⑴意为“当…的时候”，不与瞬间性动词连用，常用于进行时态中（引导时间状语从句）；
The telephone rang while she was listening to music. 她正在听音乐时电话铃响了。
⑵意为“然而”，用于强调“对比转折”关系（引导并列句）；
Jane was dressed in brown while Mary was dressed in blue. 简穿了身棕色的衣服，而玛丽穿了身蓝色的衣服。
⑶意为“尽管，虽然”（引导让步状语从句）；
While I understand your viewpoint, I don't agree with you. 尽管我了解你的观点，我还是不能赞同你。
2.while 作名词，意为“（尤指较短的）一段时间”；
3.短语汇总
①for a while一会儿，暂时
②once in a while偶尔，有时
4.meanwhile ad.与此同时←→worthwhile a.重要的，值得做的
1.while 作连词
⑴意为“当…的时候”，不与瞬间性动词连用，常用于进行时态中（引导时间状语从句）；
The telephone rang while she was listening to music. 她正在听音乐时电话铃响了。
⑵意为“然而”，用于强调“对比转折”关系（引导并列句）；
Jane was dressed in brown while Mary was dressed in blue. 简穿了身棕色的衣服，而玛丽穿了身蓝色的衣服。
⑶意为“尽管，虽然”（引导让步状语从句）；
While I understand your viewpoint, I don't agree with you. 尽管我了解你的观点，我还是不能赞同你。
2.while 作名词，意为“（尤指较短的）一段时间”；
3.短语汇总
①for a while一会儿，暂时
②once in a while偶尔，有时
4.meanwhile ad.与此同时←→worthwhile a.重要的，值得做的
⑴until作连词，引导时间状语从句，意为“到…时，直到…为止”；
I’ll wait until he arrives and then I’ll leave. 我要等他来以后再离开。
⑵until作介词，意为“直到…为止”；
⑶not until … that...结构，意为“直到…才…”；
①强调句型：It is/was not until + 被强调部分+that
②倒装句型：not until置于句首，其后所接从句不用倒装，而主句要用倒装；
It was not until she took off her dark glasses that I recognized she was a famous film star. （强调句）
直到她摘下墨镜，我才认出她是一名著名的电影明星。
Not until she took off her dark glasses did I recognize she was a famous film star. （倒装句）
直到她摘下墨镜，我才认出她是一名著名的电影明星。
⑴until作连词，引导时间状语从句，意为“到…时，直到…为止”；
I’ll wait until he arrives and then I’ll leave. 我要等他来以后再离开。
⑵until作介词，意为“直到…为止”；
⑶not ...until … 结构，意为“直到…才…”；
①强调句型：It is/was not until + 被强调部分+that
②倒装句型：not until置于句首，其后所接从句不用倒装，而主句要用倒装；
It was not until she took off her dark glasses that I recognized she was a famous film star. （强调句）
直到她摘下墨镜，我才认出她是一名著名的电影明星。
Not until she took off her dark glasses did I recognize she was a famous film star. （倒装句）
直到她摘下墨镜，我才认出她是一名著名的电影明星。
