在一些情况下This's 可能是this is, this has, this was的缩写。例如： this's Merry. 即is，this's been done, 即 has。用于was时一般不常见，尤其用this was表达时。考试时一般不要用this's当thisis缩写。

this is例句

1、This is the one major drawback of the new system.这是一大弊端。

2、This is one of the most commonly used methods.这是最常采用的方法之一。

3、This is just one of a whole complex of issues.这仅仅是所有相关的问题之一。

4、This is too big─have you got a small one?这个太大——有没有小的？

this's例句

1、The standard of this year's applications is very low.今年的申请标准很低。

2、They are one of this year's hot new bands.他们是今年走红的新乐队之一。

3、This year's results are virtually the same as last year's.今年的结果几乎和去年的一样。

4、Have you read this month's 'Physics World'?你看过这个月的《物理世界》吗？