they do sth -----（help） with the environment.I am working here----(save)the animals.请问上面两句分别用什么形式的?

is he do/dong sth? he does sth and does sth 还是 he does sth and do sth He has to do sth and do sth还是He has to do sth and does sth? they needn′t to do sth 还是 they needn′t do sth? he is sure to do sth 中 to do sth 做状语还是宾语 he always doing sth.和he always do sth.有什么区别 Do they have a basketball?(he) 一个英文单词“to tell sb what you think they should do后面是 to do sth do sth to do He never does homework还是do homework.从不做...是never do sth固定词组吗 在英语中如he never do sth ,does he?的句式怎么回答 He did whatever he could to do sth.frightened children这句话对吗.如何翻译 rather than do sth.,sb will do sth有这种用法吗?Rather than .,they will do 、、、、、有这种固定的用法一说吗 be worthy of being sth 或者 be worthy to be done都是物或事做主语的啊?He said he was not worthy to accept such honour那么be worthy of doing sth 或者 be worthy to do 都是人做主语的咯??????They are not worthy to be choosen. 他 He turned it down 为什么down 不是宾语补足语 而 He wanted me to do sth to do sth 是宾语补足语吖 He turned it down 为什么down 不是宾语补足语 而 He wanted me to do sth to do sth 是宾语补足语吖 use sth doing sth还是use sth to do sth how do you do?为什么会出现两个do?可以说what do they do?或why does he do?