几道英语问题.要写出分析过程~
问题描述：
几道英语问题.要写出分析过程~
will it be fine or rainy this afternoon?____an umbrella if necessary.(bring)
为什么用bring不用to bring
The govenment has realized that _____(pour) waste into river can(cause)problems for people.
为什么用pouring不用pour?为什么用cause不用bring呢?
A printer is a machine.It _____(use)to put words and pictures onto paper.
为什么用is used不用used?
答
bring 祈使句 当然动词原形.
pouring 动名词做主语.
is used.打印机当然是被用咯.