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since的意思及用法详解

2024-10-07 09:21:36

Since是一个英语单词,表示“自从”、“因为”或“既然”的意思。它可以作为连词、介词或副词使用,具体用法取决于句子结构和语境。

用法解释:

1. 作为连词

在句子中,since通常用作连词连接两个句子,表示时间上的关系。它可以表示某个动作或状态从过去某个时间点开始一直持续到现在。

- I have been living in this city since 2010.(我自2010年以来一直住在这个城市。)

- She has been working at this company since she graduated from college.(她大学毕业后就一直在这家公司工作。)

2. 作为介词

当since后面接一个名词短语时,它可以表示从某个具体的时间点开始算起。

- I have known her since high school.(我从高中就认识她了。)

- They have been friends since childhood.(他们从小就是朋友。)

此外,当since后面接一个时间段时,它也可以表示从那个时间段开始算起到现在的持续时间。

- She has been studying English for two years since she came to the UK.(自从她来到英国以来,已经学习英语两年了。)

- He has been working out at the gym since last month.(他上个月开始在健身房锻炼。)

3. 作为副词

当since单独使用时,它可以表示“自从那时以来”、“此后”、“因此”等意思。

- I haven't seen her since.(自从那时以来我就没见过她。)

- Since then, he has changed a lot.(从那以后,他变化很大。)

- I can't go, since I have to work.(我不能去,因为我得工作。)

例句参考:

1. Since he got married, he has been living in a different city from his parents.

自从他结婚后,就和父母住在不同的城市了。

2. We have been friends since we were kids.

我们从小就是朋友。

3. She has been studying French for three years since she moved to France.

自从她搬到法国后,已经学习法语三年了。

4. He hasn't been to the gym since last week because he hurt his leg.

自从上周他腿受伤以来就没去过健身房。

5. Since you are not feeling well, you should stay at home and rest.

既然你身体不舒服,应该呆在家里休息一下。

总结:

since是一个常用的英语单词,在句子中可以作为连词、介词或副词使用。它的主要含义是“自从”,表示时间上的关系,可以表示从过去某个时间点开始一直持续到现在,也可以表示从某个具体的时间点开始算起。除此之外,它还可以表示因果关系或推理关系。熟练掌握since的用法,有助于提高英语表达能力。

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