该问题涉及到 “形容词后加动名词或不定式规律“的语法:
例如:
第一类:表语是busy、worth等之类形容词,如下:(这些词比较特殊,日常碰到就总结起来)
be busy doing sth
be worth doing sth
.
第二类:表语是 important, necessary; essential; indispensable, meaningful等其他形容词,通常用不定式作主语表示一次具体的行为.如下:
be important to do sth
be necessary to do sth
.
形容词helpful属于第二类,所以选择答案为:C
希望能对您有帮助!
it's helpful with friends该填哪个 A to studying B studying C to study D study
it's helpful with friends该填哪个 A to studying B studying C to study D study
英语人气:149 ℃时间:2019-10-17 02:41:03
优质解答
我来回答
类似推荐
- Please d with your friends about the way to study well
- why not ( )English by working with a group .a .study b.to study c.studying d.studies
- i want to find a friend (only female)...to study English with me
- he said that ____(study)with a group helped a lot这里是填studied 还是studying?为什么?
- let him study english with me 为什么study要用原型、而不用studies 、studying\ to study?