有些英语问题1、Idon'tthinkyoucanmovethebox,xinceeventwoofuscan'tmoveit.此处sinceeven以及sinceeven前的逗号是什么意思2、wecanchangewaterintoagas,too,butwecanfirstbeatittoitsboiling-point.wecan中的ca

Question

有些英语问题
1、I don't think you can move the box,xince even two of us can't move it.
此处since even以及since even前的逗号是什么意思
2、we can change water into a gas,too,but we can first beat it to its boiling-point.
we can中的can可以换成can't么,too前后的逗号有什么意思么,
3、if you had had the right tools,can you have repaired the engine?
can 可以换成couldn't么
4、if you worked hard,you succeed.
succeed后面是不是有一个in
6、when he went out he left the radio on so that his parents should think that he was still in his room怎么解释应该；此处on是作副词修饰前面的半句句子么

Answer 1

逗号是为了分隔主句和原因状语从句,since是原因状语从句的引导词,even two of us,甚至我们两个合起来（都搬不动）.can和can't咋可能一样呢?too通常都以逗号和主句隔开,后面的逗号是因为有but引导的转折关系的分句存...