美国childlife哪里有卖:be good at 擅长于…

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是加动词原形还是+doing

be good at 擅长于+doing
例：She is good at singing.
还有一个同义词组：do well in +do
She does well in sing.

be good at +doing sth

at 是一个介词 ，介词后接动词的ing

She is good at singing.

她擅长于唱歌

加动名词，即doing sth.，这是固定搭配。

be good at doing sth
希望你能满意，谢谢

+doing,因为at是介词,后面的动词要用ing

doing i think

be good at 擅长于… how to be so good at blog be good for,be good at ,be good to 的区别 be good at中间的good能否换成excellent？ Why did englishman can be good at the english be good at与dowell in的区别 be good at中的good可不可以变成最高级 如果可以需不需要加the 急。。。请问一下be good at 这个短语是什么意思？谢谢大家 be good with 和be good a 1st 100-score question will be awarded to the one who is good at English & computer