waiting後接什麼介詞

後接介詞for，例如：

1、I'm still waiting for confirmation of the test results.我仍在等待考試結果的通知書。

2、Students stood around in groups waiting for their results.學生們成羣地站在周圍等待成績。

3、I was waiting for the right moment to ask him.我在等待時機問他這件事。