be good at、be good with、be good to、be good for辨析 1. be good at = do well in“擅长……，在某方面做得好” 2. be good with“和……相处得好” 3. be good to = be friendly/kind to“对……友好” 4. be good for“对……有好处” be bad for“对……有坏处” 例句： He is good at math. = He does well in math. She is good at playing football. = She does well in playing football. The teacher is good with the pupils. Her grandmother is always good/friendly/kind to her. Eating fishes is good for our eyes. Eating junk food is bad for our health. help的用法 1. help sb. (to) do sth. 帮助某人做某事 Can you help me (to) learn English? 2. help (sb.) with sth. He can help you with your homework. 3. help oneself (to+n.) 自用（食物）等 Please help yourself to some pork. 4. help sb. out 帮助某人克服困难 She can help us out with this problem. 本文来源：https://www.wddqw.com/doc/fc6607619989680203d8ce2f0066f5335b8167d4.html