什么单词或词组后要加原形或Ing形式?在什么时候下要用To do?

Question

说清楚点,最好多点。谢谢!

Answer 1

ing作 状语或住语时 ，如: Being a party member, you should set an example for the others.(原因 状语) Being a party member is a pride.(做主语) Seeing that the work needs help,he offeres to help them.(原因 状语) 你的句子look up the word in the dicitionary and you will know what it means 是另 一种句型： 祈 使 句 and/or 陈述句（一般现在时 ），前边的祈 使 句相当于表示条件，但如果用If you look up the word in the dicitionary ,就不能用and或or .再 如： Use your head and you will find a good idea. Hurry up ,or we'll be late. Don't move , or I will fire.

Answer 2

不定式(to),助动词(do).加动词原形。be动词(is.am.are).介词后面加ing形式。还有固定的词组搭配要记住.