［误］ I came across with an old friend in the street yesterday.

［正］ I came across an old friend in the street yesterday.

［析］ come across是"偶然碰见、遇见"，要直接加宾语，如：I've just come across

a beautiful poem in this magazine.

［误］

Where do you come from?

I come from the station.

［正］

Where did you come from?

I came from the station.

［正］

Where do you come from?

I come from China.

［析］ Where do you come from?意为"你是什么地方的人?"而Where did you come from?则是"你从何处来?"

［误］ The stars are coming out from the cloud.

［正］

The stars are coming out of the cloud.

［析］ come out of意为"从……地方出来"。

come in come into enter

come in与come into的意义相同，但come into后面要加宾语，而come in后面不用宾语。如

I found someone came into my room. The door opened and the child came in.

enter常作为及物动词使用，如：

The bus entered the English tunnel.

congratulate

［误］

I want to congratulate you for your success with all my heart. ［正］

I want to congratulate you on your success with all my heart. ［析］ 动词congratulate somebody on something是"向某人祝贺某事"。其名词congratulation在用时一般要用复数，如：I offered him my congratulations on his success.