1、延续性动词可直接与表段时间的since, for 短语连用。(注:for接表示一段时间的词。如:for three years, for a long time;since接时间点或过去从句。如:since three years ago, since he came to this city。) I have kept the book for two weeks. 这本书我借了两周了。 在肯定句中,非延续性动词若要与段时间连用,可通过以下几种形式: 1. 用状态动词代替非延续性动词或用系表结构代替句中的谓语。常见的转
2、化有:join→be in / a member of, begin→be on, leave→be away (from), die→be dead, borrow→keep, buy→have 等。例如: The film has been on for an hour. 电影已经上演一个小时了。 2. 用“... ago”代替原句时间状语。例如: The film has been on for an hour. = The film began an hour ago. 3. 用“It’s / has
3、 been + 段时间 + since + 从句.”代替原句。例如: Tom has had the book since two years ago. = It’s two years since Tom bought the book. 1. 非延续性动词不能用于“how long ...”引导的特殊疑问句中。例如: 误:How long may I borrow the bike? (要将borrow 改为keep)瞬间动词到延续性动词的转换:这里对一些词做一些总结:瞬间动词 可转换的延续性
7、 know begintostudy studycometowork work getup beupleave be awayfrom等 如:1.Hehasbeenasoldierforthreeyears.他参军三年了。2.Hisfatherhasbeendeadfortwoyears.他父亲去世二年了。3