be good at to do还是be good at doing还是be goodat do

be good at to do还是be good at doing还是be goodat do
be good at to do还是be good at doing还是be goodat do

be good at to do还是be good at doing还是be goodat do
be good at doing
善于做

选择：
（B）
A•somebody be good at to do
B•somebody be good at doing
C•somebody be goodat do
解释：
此为一个固定搭配的词组，意思是：擅长于、善于（某人擅长于做某事）
造句：
I am good at painting...

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选择：
（B）
A•somebody be good at to do
B•somebody be good at doing
C•somebody be goodat do
解释：
此为一个固定搭配的词组，意思是：擅长于、善于（某人擅长于做某事）
造句：
I am good at painting.
He is good at writing.
Are you good at riding bike?

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be good at doing sth词组 擅长做某事

be good at doing

be good at doing 词组 擅长做某事