be not good at後面加什麼

This would be welcome, for things are not so good at home.

能這樣大家會拍手稱快，畢竟國內的'情況沒那麼好。

He be not very good at description.

他不太擅長描寫。

To be good at writing requirements you must understand not the operating system but the operator.

為寫出好的需求，你要理解的是操作人員而不是操作系統。