My brother is good English ,and I do well Maths.We all work hard __them.横线上为什么分别填上 at,in,at

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Mybrotherisgood__English,andIdowell__Maths.Weallworkhard__them.横线上为什么分别填上at,in,atMybrotherisgood__En

My brother is good __English ,and I do well __Maths.We all work hard __them.横线上为什么分别填上 at,in,at
My brother is good __English ,and I do well __Maths.We all work hard __them.
横线上为什么分别填上 at,in,at

My brother is good __English ,and I do well __Maths.We all work hard __them.横线上为什么分别填上 at,in,at
都是固定搭配呀
be good at 与do well in 同义‘擅长于……,在……方面做得好’
work hard at ...努力学习……

be good at=do well in
所以填at in at

at in with

固定搭配，记住就行了

be good at是个固定短语，擅长的意思。do well in , work hard at 也一样啊！记住就可以了

be good at ;do well in这是两个词组，表示在某方面擅长，做的好的意思。work hard in表示很努力，他们在在各自擅长的领域很努力，所以用in.

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