她在回来之前就生病一个星期了。(回来发生在过去某一时间,发病发生在过去的过去)
She has been ill for a week.
她生病一个星期了。(现在仍在生病)
、动词时态的一些典型用法
1.在if, unless, even if 引导的条件状语从句中,在when, before, until (till), as soon as, the moment, once 引导的时间状语从句中,在no matter what /who / which / when / where / how 或whatever, whoever, whichever, whenever, wherever, however 引导的让步状语从句中,如果主句是将来时(往往出现will / shall / can / must )或主句是祈使句,从句用一般现在时表示一般将来时。如:
① I’ll go with you as soon as I finish my work.
② The new secretary is supposed to report to the manager as soon as she arrives.
③ — Can I join your club, Dad ?
— You can when you get a bit older.
④ If city noises are not kept from increasing, people will have to shout to be heard even at the dinner table 20 years from now.
⑤ Hundreds of jobs will be lost if the factory closes.
2.would 与used to
① would 与used to 都可用来表示过去经常性或习惯性的动作,常常可以换用。如:
When we were boys we used to / would go swimming every summer.
【2017年高考英语一轮复习讲练测:必修3 语法专题复习 动词时态语态复习(1)(讲)(解析版)】相关文章:
★ 天津市武清区杨村第四中学2016届高考英语一轮复习语法专题九《正反解读动词的时态和语态》课件外研版
★ 2014高考英语(新人教版)一轮基础训练(15)A、B卷(附答案或解析)
★ 【课堂新坐标】2017届高考英语(通用版)二轮复习完形填空专题训练:技法2 利用语义逻辑关系解题(含解析)
★ 2014届高考英语一轮复习课时作业(六)必修1Module 6《The Internet and Telecommunications》(外研版)
★ 2017高考四川省广安市英语阅读理解一轮系列训练:17(含解析)
★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五:体验真题(含解析)
★ 2017届高考英语二轮复习大题冲关秘籍语法填空:解题技巧(含解析)
★ 北京市2014高考英语一轮复习 练习手册(34)选修7 Unit 4 Sharing(含解析)新人教版
★ 【三维设计】2017版(江苏专用)二轮复习练习:必修3 Unit 3《Back to the past》课时跟踪检测B卷(含解析)
★ 天津市武清区杨村第四中学2016届高考英语一轮复习语法专题五《状语从句》课件外研版
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21