专四考试中，有语言知识一项，一共有20题，其实就是词汇语法题啦。而且不止是语言知识，完形填空也必须用到语法。语法看似简单，而且都是选择题，但是也是失分点，为了让大家保证在这项上不失冤枉分，小编为大家带来专四语法每日一练
1. Mike, you__1__play with fire. You__1__ burn yourself.
A. won’t; can’t B. mustn’t; may
C. don’t have to; must D. have got to; shouldn’t
2. You__2__see the doctor, Joe. You don’t look very well.
A. must B. shall C. may D. can
3. —Must I clean the window now?
—No, you__3__
A. mustn’t B. needn’t C. can’t D. may not
4. Jack’s ill, so they__4__change their plans.
A. must B. should C. have got to D. ought to
5. Harry has been reading all day —he__5__be tired.
A. should B. has got to C. has to D. must
（做完后才能看答案哦！）
1 B
2 A
3 B
4 C
5 D
中文：如果语句语法英文翻译：【计】IF-statement syntax...
中文：大语法标记英文翻译：【计】large syntactic mark...
中文：外部语法英文翻译：【计】outer syntax...
中文：可移植语法英文翻译：【计】portable syntax...
中文：变量名语法英文翻译：【计】syntax of variable name...