Question

高中英语问题

高中英语问题He says if I decide to do something, it takes him much time to stop me. 为什么不在it前加连词

Answer 1

He says (that) if i decide to do something,  it takes him much time to stop me.

他说，如果我决定做什么事，这将花费他不少时间来阻止我。

这是条件状语从句，“if···something”是条件语句，是后面结论的前提，"it"指代"someting"，"it···me"是在前提条件下的结论。两者加起来才是完整的句子。

类似的有：

1. If you can read as many English books as possible, your English can be improved.

   如果你尽可能多的读英语书，你的英语会有进步的。
   

2. If you ask him,he will help you.

   如果你请他帮忙，他会帮你的。

if引导的条件状语从句，既可以将从句放前面，也可以将从句放后面：

If it rains,we will stop playing.

=We will stop playing if it rains.（这里没有逗号）

如果天下雨，我们就不玩了。

Answer 2

变个语序自己看还需不需要连词了。
He says it takes him much time to stop me if I decide to do something.

Answer 3

IF 就是连词，if so，although but这种在汉语里成对出现的词在英语里只能同时存在一个