麻烦帮我造个句子用这些词语造句1.spend sth on(sth doing sth)花(费,时间)等2.observ

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麻烦帮我造个句子
用这些词语造句
1.spend sth on(sth doing sth)花(费,时间)等
2.observe 看到,注意到,观察,监视
3.must have been 表达对过去的事情进行推测
4.devote (oneself/sth)to(sth/sb) 为(某人或某事)付出(时间,精力等)
5.look down on 瞧不起,轻视

1 He doesn't spend much time on his homework .
他花在作业上的时间不多.
2 Observe a child's behavior.
观察一个孩子的行为.
3 It must have been the wind.
这一定是风声.
4 He devoted himself to his work
他一心于他的事业.
5 Look down on women is wrong.
轻视妇女是错误的.

spend on sth 等于spend doing sth spend doing sth和spend on sth spend...on(in)doing sth.造句 spend st/sm on doing sth 造句 sb spend time/money on sth/in doing sth 造句2个用这些造英语句子 finish doing sth keep doing sth avoid doing sth del 用 1 stand doing sth 2 love doing sth 3 like doing sth 造个句子有spend.on doing sth spend ...on(in) doing sth ---------------------------------- 1.pay for sb/sth和spend.doing sth, spend.on sth的用法 1.spend st on doing sth;spend st doing sth;spend st to do st 用 spend …on sth造句