Question

【题目】—Where's your brother now, Bob?

—I saw him ________ in the street a moment ago and I told him ________.

A．playing; don't do so

B．playing; not to do so

C．play; to do so

Answer 1

【答案】B

【解析】see sb. doing sth.意思是“看到某人在干某事”；tell sb. to do sth.“告诉某人干某事”，其否定形式是在to前加not。