1) I have to try!

我得试一下!
3) Let me have a try at [for] it.

让我试一下。
4) I have to tidy myself (up) a bit.

我得梳理一下。
5) I need to have a look see.

我得检查一下。
6) I must tidy myself up, ie make myself look tidy.

我得梳理一下.
参考词条