插花向日葵怎么保鲜:have an effect 后面接什么介词呀?

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on.

have an effect on sth.

表示在.....起到了效果.

加on:
对...有影响
对..起作用, 产生效果

have an effect on sth.

have an effect on=affect

0n

on

have an effect 后面接什么介词呀? who 后面应该接has 还是have 例如 who have/s my book? I HAVE AN IN COMING CALL铃声 We ? (have) an English class. ?填什么 I have an 18-year-old sister. have an illness对不对？illness可数吗？ how many teeth does an adult have? have to后面怎么跟动词？ have some 后面加名词复数吗 When will Baidu.com have an IPO in China?