詞彙精選：since的用法和辨析

一、詳細釋義：

adv.

此後；後來

例句：

About six thousand people were arrested, several hundred of whom have since been released.

約6,000 人被捕，後來其中的幾百人又被釋放了。

例句：

His style of leadership has attracted increasing criticism among his supporters, many of whom have since left Central Office.

他的領導風格已經在他的擁躉中引起了越來越多的批評，很多人後來離開了總局。

conj.

從...以後；自...以來

例句：

I have lived here since I was born.

自打出生，我就住在這兒。

例句：

They have been living on easy street since his business began to prosper.

自從他的生意興隆以來，他們一直過着優裕的生活。

因爲；由於；既然

例句：

Since I am busy, would you attend to the matter for me?

因爲我忙，你能代我處理這件事嗎？

例句：

I'm forever on a diet, since I put on weight easily.

我永遠都在減肥，因爲我很容易長胖。

prep.

自...以後；從...以來

例句：

She had a sort of breakdown some years ago, and since then she has been very shy.

幾年前她得了神經衰弱，自那以後就變得十分靦腆。

例句：

I've been here since the end of June.

自6月末以來我就一直呆在這兒。

二、詞義辨析：

as,because,for,since

這些連詞均含有“因爲”之意。as從屬連詞，語意較because,since弱，着重在主句，所表示的原因或理由是“附帶的”。because從屬連詞，語意強，着重直接的原因或理由，所引出的從句是全句的重心，用以回答why提出的問題。for並列連詞，語氣較弱，所引出的句子一般放在後面，表示附帶說明的理由或推斷理由。since語意比because弱，但比as強，一般用於表示“由於大家已知的事實”。

三、參考例句：

He has ignored his friends since graduation.

自從畢業後，他就忽略了自己的朋友。【CET-6 2007.06 聽力】

He has disappeared for ever since then.

從那以後，他就永遠地失蹤了。

There has been serious pollution since industrialization.

自從工業化以來就有了嚴重的污染。

Many centuries have passed since that time.

從那時起，幾百年過去了。

Pandas have existed since the dinosaur era.

早在恐龍時代，大熊貓就出現了。

Since when has she taught here?

她從什麼時候開始在這兒教書的?

Since then the picture has changed completely.

從那以來情況完全改變了。

I've lived here since childhood.

從小我就留存這裏。

Its sales had been brisk since July.

自7月以來銷售一直很旺。

We have been friends ever since .

從那以後我們就成了朋友。