小学是我们整个学业生涯的基础，所以小朋友们一定要培养良好的学习习惯，威廉希尔app 为同学们特别提供了五年级英语知识点since的四种用法，希望对大家的学习有所帮助!

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

为大家整理的五年级英语知识点since的四种用法就到这里，更多小学生辅导相关内容请随时关注威廉希尔app 小学频道!

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