我不知道用英語怎麼表達用英語怎麼表達？

　　I don't know what to make of the new manager.

　　這位新經理，我不知道怎麼評價他才好。

　　I don't know what you're on about.

　　我不懂你在談什麼。

　　I don't know how you can say things like that.

　　真想不到你怎麼會說出這種話來。

　　I don't know how she puts up with him.

　　我不明白她怎麼受得了他。

　　I don't know if I can come but I'll try.

　　我不知道是否能來，但我儘可能來。