Question

【题目】Mr. Li asks the students in the river, because it is too dangerous.

A.to swimB.not to swimC.swimD.don’t swim

Answer 1

【答案】B

【解析】

句意：李先生要求学生们不要在河里游泳，因为太危险。

A. to swim动词不定式；B. not to swim动词不定式的否定形式； C. swim动词原形；D. don’t swim祈使句形式。ask sb to do sth要求/让某人干某事，其否定结构为ask sb not to do sth。故选B。