国产精品麻豆欧美日韩ww_欧美日高清视频_亚洲精品成人久久久_久久精品国产清自在天天线

打印本文 打印本文  關(guān)閉窗口 關(guān)閉窗口  
since(自從)通常連用什么時態(tài)
作者:龍  楠  文章來源:本站原創(chuàng)  點擊數(shù)  更新時間:2013-06-30  文章錄入:龍楠  責(zé)任編輯:admin



since(自從)通常連用什么時態(tài)  

   

■湖南      

   

一、since通常通常搭配的時態(tài)  

當(dāng)since表示“自從”時,不管它是用作介詞、連詞還是副詞,它通常都要與現(xiàn)在完成時連用。如:  

I’ve worn glasses since my childhood. 我從小就戴眼鏡。  

The works have been closed since January. 一月份以來這些廠就關(guān)閉了。  

He’s put on a lot of weight since he gave up smoking. 他戒煙后體重增加了許多。  

Nothing has happened since. 從那以后未發(fā)生什么事。  

She moved to London last May and has since got a job on a newspaper. 她去年五月到倫敦 此后一直在報社工作。  

有時連用現(xiàn)在完成進行時。如:  

He has been working since noon. 他從中午就開始工作了。  

二、since搭配時態(tài)的特殊情況  

雖然since通常要與現(xiàn)在完成時連用,但在以下情況,它也可以連用除完成時態(tài)以外的其他時態(tài):  

1. 當(dāng)主句表示“多長時間”時,動詞可用一般現(xiàn)在時(當(dāng)然也可用現(xiàn)在完成時)。如:  

It’s a long time since I met you last. 好久不見了。  

It’s just a week since we arrived here. 我們到這里才一個星期。  

It’s a long time since I met you last. 從上次見到你,已有很長時間了。  

以上各句的it is也可換成 it has been,不過在口語或非正式文體中,用一般現(xiàn)在時的情形比較普遍。  

2. 當(dāng)主句謂語動詞為seem等連系動詞時。如:  

It seems like years since we last met. 我們似乎幾年未見面了。  

It seems like years since I last saw you. 從上次見到你以來好像已經(jīng)有許多年了。  

3. 當(dāng)主句和從句表示情況“變化”時。如:  

She doesn’t come round to see us so much since her marriage. 自從結(jié)了婚,她不怎么過來看我們了。(原來經(jīng)常來,結(jié)婚后就不怎么來了)  

Since he went on that course he thinks he knows everything. 自從他選了那門課程,他就認(rèn)為自己什么都懂了。(原來不認(rèn)為自己什么都懂,但選了那門課程后就認(rèn)為自己什么都懂了)

   

打印本文 打印本文  關(guān)閉窗口 關(guān)閉窗口