be good at的同義詞是do well in
be good at: 擅長於 be bad at 不擅長於
be good for: 對...有好處; 有益於 be bad for 對...有害; 不益於
good(形容詞,意思是“好的”)和well(副詞,意思是“好”),它們組成的同義詞組be good at和do well in可有用啦!讓我們一起去瞧瞧吧!
be good at 是指:某人擅長於(做)某事,at 在這裏是一個介詞,可以在其後跟名詞,或在其後跟動詞-ing 形式,表示做某事做得很好,很出色。它的同義短語是do well in。一般可通用。例如:
1. I am good at Chinese. 我擅長於語文。
上面這句還可以説:
I do well in Chinese. 我語文學得好。
2. Mr Black and his son are good at playing football.
布萊克先生和他的兒子擅長踢足球。
這句改為否定句,是:
Mr Black and his son aren’t good at playing football.
這句改為一般疑問句,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. 他體育學得好。
這句改為否定句,是:
He doesn’t do well in PE. 他體育學得不好。
這句改為一般疑問句,是:
Does he do well in PE? 他體育學得好嗎?
回答是:Yes, he does. / No, he doesn’t.
我們在使用時還要注意be動詞 (am / is / are) 和助動詞 (do / does) 的正確選擇哦!