fall down

fall down    摔倒，跌倒

【例句】

◆ She slipped and fell down.她滑倒了。

【联想】

fall back后退，退却     

fall into落入，陷于，分成      

fall behind落后，落后于……

【微测】

But before I could reach it,one of my feet caught in something soft and  I  fell____．

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