1.〔误〕 Do you have the key of the door.
〔正〕 Do you have the key to the door.
〔析〕 key to the door门的钥匙。相同用法还有 answer to the question, entrance to the highway, danger to health.千万不要用 of。
2. 〔误〕 I didnt do my homework, so the teacher was angry to me.
〔正〕 I didnt do my homework, so the teacher was angry with me.
〔析〕 be angry with其后接人，而 be angry at其后接事。如： He was angry at what she said.
3. 〔误〕 He was good for skating.
〔正〕 He was good at skating.
〔析〕 be good at为"擅长某事"，而 be good for somebody为对某人很好。
4. 〔误〕 It was good to you to help my little boy.
〔正〕 It was good of you to help my little boy.
〔析〕 这句话应译为：你真太好了，帮助了我的小孩。而 be good to somebody是对某人态度好。如： Her mother is good to everyone.
5. 〔误〕 My parents were very pleased at me.
〔正〕 My parents were very pleased with me.
〔正〕 My parents were very pleased at my studying.
〔析〕 be pleased with后加 somebody,而 be pleased at后加 something。
6. 〔误〕 He is agree with me.
〔正〕 He agrees with me.
〔误〕 He againsts me.
〔正〕 He is against me.
〔析〕同意 agree为动词，而反对 against则为介词。在使用中一定要注意。
7. 〔误〕 I havent heard letters from him.
〔正〕 I havent heard from him.
〔析〕 hear from即为：从某人处得到信件。不要再加 letter了。
8. 〔误〕 Do you know the girl on white?
〔正〕 Do you know the girl in white?
〔析〕 in white为穿一身白。与 in有关的词组有： in bed(睡觉)， in hospital(住院)， in a hurry(匆匆忙忙)， in danger(危险中), in joy(高兴)， in good health(身体好)， in love(恋爱)， in trouble(困境)，与之相反的是 out of,如： out of trouble(摆脱困境)， out of date(过时了)， out of order(出故障)
9. 〔误〕 She didnt come to school because of she was ill.
〔正〕 She didnt come to school because she was ill.
〔析〕 because of后接名词，如： The game was put off because of the rain.
10. What can I do for you? - I’ d like two____
A. box of appleB. boxes of applesC. box of applesD. boxes of apple
答案: B. (选择其它三项的同学要注意仔细看题不要马虎,这里 box和 apple都是可数名词)
