英语的几道题讲解1.-Sorry for being late again.-( )here on time next time,or you will be punished.A.be B.being C.to be D.been2.Be sure to come tonight.(改为否定句)要讲解

问题描述:

英语的几道题讲解
1.-Sorry for being late again.
-( )here on time next time,or you will be punished.
A.be B.being C.to be D.been
2.Be sure to come tonight.(改为否定句)
要讲解

1.A 这句为祈使句,用动词原形开头
2.Be sure not to come tonight.
因为be sure to是确定的意思,否定的not 应在sure的后面,to的前面。

第一题选A,祈使句用动词原形,be动词的原形就是be。意思是“下次准时到,否则你要被惩罚”
Be sure not to come tonight.

第一题选A,祈使句加上and或者or,再加上将来时态的简单句,是一个条件状语从句的结构.所以前面的祈使句用动词原形开头.
第二题Be sure not to come tonight.
to do 不定式的否定形式,都是在前面加上not