英语语法问题All I could do is sit on my chair and fix my radio.　这是

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/09/14 12:43:16

英语语法问题
All I could do is sit on my chair and fix my radio.　这是一本翻译书上的句子　is后面为什么能用原形　而不是sitting或者to sit?

答：用不定式而不用动名词是因为前者表示“一次性的,将来要发生的,具体的”动作.而后者表示的是“一般性的,抽象的,平常的”动作.
作表语用的不定式可以省略to是因为前句主语（是个名词性从句）中,出现了动词do.前有do,后无to.类似的情况还有：Della could do nothing but cry.对比：She had no choice but to cry.
因为从逻辑上看,知道后面的一定是一个动作动词,而不是一个名词.这个to习惯上可以省略.不省略不算错!
比较：What I want is work.和What I want to do is work with you.前一个work是名词（活儿）,后一个work是无to不定式.

语法All he does is sit on the chair all day 为什么是does My family and I often sit on the balcony. My name is Marty Fielding and I guess you could say I am "on I could not do my homework with all that noise< > My backpack is (on the chair.) My jacket is on the chair 英语语法问题为什么句子"She find a chair to sit on."中"sit"后还要加"on",可以直接说 on my chair 是sit on the chair还是sit in the chair 是sit in a chair还是sit on a chair? the chair is too hard to sit on.改为同义句 the chair i My brother is good __English ,and I do well __Maths.We all w

英语语法问题All I could do is sit on my chair and fix my radio. 这是

英语语法问题All I could do is sit on my chair and fix my radio.　这是