4. to read → reading, enjoy其后只可加動名詞。

3. say → said， said是過去分詞作補(bǔ)足語， 而it是形式主語。

2. speak → to speak， 感觀動詞/使役動詞改為被動語態(tài)時， 要將主動態(tài)時省去的“to”還原。

1. was used to → used to， used to +動詞原形表示過去的習(xí)慣， be used to+名詞/動名詞表示習(xí)慣的持續(xù)。

10. The doctor advised me giving up to smoke.

　　 注 釋

9. You had better not to go there.

8. Smiling graciously, my offer was accepted by him.

7. You should avoid to keep company with such people.

6. It is difficult to make yourself understand in English.

5. His father would not let him to go.