英语是AEAS考试培训中至关重要的课程，2016AEAS考试报名时大家关注较多的就是英语方面。为了更好的提高广大考试的AEAS真题模拟成绩，下面澳大利亚中学入学考试网带领大家一起学习since的四种用法。

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.l

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.

以上就是澳大利亚中学入学考试网关于since的四种用法的全部内容，AEAS考试难度还是比较大因此建议同学们做足准备准备工作提高英语能力，制定科学合理的备考策略，循序渐进的提高英语实力！更多AEAS备考资料请持续关注澳大利亚中学入学考试网。