be good at的同义词是do well in
be good at: 擅长于 be bad at 不擅长于
be good for: 对...有好处; 有益于 be bad for 对...有害; 不益于
good(形容词,意思是“好的”)和well(副词,意思是“好”),它们组成的同义词组be good at和do well in可有用啦!让我们一起去瞧瞧吧!
be good at 是指:某人擅长于(做)某事,at 在这里是一个介词,可以在其后跟名词,或在其后跟动词-ing 形式,表示做某事做得很好,很出色。它的同义短语是do well in。一般可通用。例如:
1. I am good at Chinese. 我擅长于语文。
上面这句还可以说:
I do well in Chinese. 我语文学得好。
2. Mr Black and his son are good at playing football.
布莱克先生和他的儿子擅长踢足球。
这句改为否定句,是:
Mr Black and his son aren’t good at playing football.
这句改为一般疑问句,是:
Are Mr Black and his son good at playing football?
回答是:Yes, they are. / No, they aren't.
3. He does well in PE. 他体育学得好。
这句改为否定句,是:
He doesn’t do well in PE. 他体育学得不好。
这句改为一般疑问句,是:
Does he do well in PE? 他体育学得好吗?
回答是:Yes, he does. / No, he doesn’t.
我们在使用时还要注意be动词 (am / is / are) 和助动词 (do / does) 的正确选择哦!