ask for後面加什麼詞

He was so busy that he had to ask for help.

他太忙了，不得不請求幫助。

I know that this is a bad time to ask for help.

我知道在這時候要求幫助不合適。

You can ask for a chemical analysis of your tap water.

你可以要求給你的自來水做化學分析。

Is it too much to ask for a little quiet?

請略微安靜一點兒，這個要求過分嗎？

You're quite within your rights to ask for your money back.

你完全有權要回你的錢。