特岗教师招考英语语法专题复习：时间状语从句详解（二）

　　中小学教师职业道德规范特岗教师待遇 【时间状语从句】

　　B. before， after

　　1. before

　　before表示在一段时间之前。

　　I must finish all the work before I go home.

　　回家之前我必须干完所有的活。

　　You must first learn to walk before you try to run.

　　在想要跑以前，你得先学会走。

　　He had learned English for three years before he went to London.

　　他去伦敦之前已学了三年英语。

　　【提示】

　　before 从句往往带有否定的含义。

　　He ran off before I could stop him.

　　我还没来得及阻止他，他就跑掉了。

　　Take it down before you forget it.

　　趁着还没忘记的时候就记录下来。

　　【】before 常用句型 It is / was / will be +before

　　It will be five years before we meet again.

　　五年以后我们才能再见。

　　It will be not long before you regret what you have done.

　　不用过多久你就会对你所作所为感到后悔的。

　　It was not long before I realized I was wrong.

　　不久我就意识到我错了。

　　It was minutes before the police arrived.

　　过了几分钟警察才到。

　　2. after

　　after表在一段时间之后。

　　Lets play football after school is over.

　　放学后我们踢足球吧。

　　The sun came out soon after the storm stopped.

　　暴风雨过后不久，太阳出来了。

　　C. till， until

　　1. until / till用于肯定句时，表示直到为止，主句必须为持续性动词。

　　We shall wait until / till he comes back.

　　我们将一直等到他回来。 (注意它们的拼写)

　　Everything went well until / till that accident happened.

　　直到发生那意外之前，一切都正常。

　　2. not...until / till表示直到...才...，主句通常要用短暂动词，这时until和till可用before代替。

　　I didnt leave until / till / before she came back.

　　直到她回来，我才离开的。

　　Bells dont ring until / till / before you strike them.

　　铃不打不响。

　　People do not know the value of their health until / till / before they lose it.

　　人们直至失去了健康才知其可贵。

　　3. 当not until位于句首时，主句中的主语、谓语要使用倒装语序。

　　Not until she stopped crying did I leave.

　　直到她不哭了，我才离开的。

　　【注意】

　　until引导的从句可以放在主句之前或主句之后，但till从句一般不放在句首。

　　4. 在强调句型中一般只能用until，不用till。

　　It was not until she took off her dark glasses that I recognized her.

　　直到她摘下墨镜，我才认出她。

　　D. since， ever since

　　1. since自...以来。表示动作从过去某一点时间一直延续到说话时间为止。主句中通常为延续性动词的现在完成时，since从句中一般用短暂性动词的一般过去时。

　　It has been just a week since we arrived here.

　　我们到这儿刚刚一星期。

　　Where have you been since I last saw you

　　自上次我见过你之后，你去了哪里？

　　Since she was young， she has been collecting stamps.

　　她自年轻时起就一直集邮至今。

　　【提示】

　　有时since 从句中也可以用延续性动词，注意它的译法。

　　Tom is now working on the farm. It has had two years since he was a college student.

　　汤姆现在农场上班，他大学毕业已有两年了。

　　2. ever since 从那时起直至现在，此后一直。表示说话者强调主句动作或状态持续时间长，语气比since强。

　　Ever since they got married in 1950， they have lived happily.

　　自一九五零年结婚以来，他们一直生得很幸福。

　　3. since还可以用作副词或介词。

　　The big clock was damaged during the war and has been silent(ever)since.

　　这只大钟在战争中损坏了，从此就一直不响了。

　　My uncle went to Tibet in the 1950s. He has been living there(ever)since.

　　我叔叔五十年代就去了西藏，从那以后他一直生活在那里。

　　You have made great achievements in your work since graduation.

　　你们自毕业以来已经在工作中取得了巨大成就。