语法是学习英语的关键。我们要对它格外重视。因此精品小编为大家整理了这篇小学五年级英语语法：since的四种用法，以供大家参考。

1) since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。

I have been here since 1989.

2) since +一段时间+ ago

I have been here since five months ago.

3) since +从句

Great changes have taken place since you left.

Considerable time has elapsed since we have been here.

4) It is +一段时间+ since从句

It is two years since I became a postgraduate student

由精品小编为大家提供的小学五年级英语语法：since的四种用法就到这里了，希望这篇文章能够帮助到您。

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