【—延续性动词辅导】关于延续性动词语法的讲解，同学们认真看看。

　　延续性动词：

　　how long，since，for，(以上见84）until / till等所在肯定句中的主句谓语要用延续性动词(以下划线部分)： We have been in Zhengzhou for ten years.

　　How long may I keep this novel? I’ve lived here since 2002.

　　Let’s wait until he comes back.. 但否定句中可用短暂性动词，如下面的see与leave：

　　I haven’t seen you for a long time. They won’t leave until it stops raining.

　　另外，请观察以下短暂性动词转换成延续性动词的常见表达：

　　lose →be lost. start / begin to do→do go off→be off

　　start, begin→be on turn on→be on move to→live in

　　end→be over get, buy→have, own borrow→keep

　　die→be dead go out→be out fall asleep→be asleep

　　get / become + adj →be + adj. open(动词，“打开”) →be open(形容词，表状态)

　　arrive in, get to, reach→be in, stay in leave, go away (from)→be away (from)

　　如以下例子的划线部分(并注意黑体部分的变化)：

　　The dog died five hours ago. →The dog has been dead for five hours.

　　I lost my dictionary two weeks ago. →My dictionary has been lost since two weeks ago.

　　He began to teach English last year. →.He has taught English for one year.

　　Lucy arrived in Beijing the day before yesterday. →Lucy has been in Beijing for two days.

　　I bought this bike six months ago. →I have owned this book since six months ago.

　　My friend borrowed the book last month. →My friend has kept the book for a month.

　　He left Beijing in 1990. →He has been away from Beijing since 1990.

　　(注意以上的“for + 时间段”与“since + 时间段 + ago”或“since + 时间点”可互换)

　　以上对于延续性动词语法的讲解，希望同学们能很好的掌握，相信会很好的帮助同学们的复习学习的。

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