whether和if都可以引导宾语从句

2023-02-25 01:01:46   文档大全网     [ 字体: ] [ 阅读: ]

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宾语,从句,引导,whether,可以


whetherif都可以引导宾语从句,表示是否”,在口语或间接引语中两者可以互换使用;如:

I wonder if / whether I can get some advice from you.

Ask him whether / if he can come.

但在有些情况下,whetherif的用法有一定区别;

1. whether引导的从句常可以与连词oror not直接连用,if一般不能;如:

正: Let me know whether you can come or not. 误: Let me know if you can come or not.

2. 当宾语从句提到句首时,只能用whether引导,而不能用if;如:

正: Whether it is true or not, I can’t tell. 误: If it is true or not, I can’t tell.

3. whether可以引导带to的不定式,if则不能;如:

正: I don’t know whether to accept or refuse. 误: I don’t know if to accept or refuse.

4. whether及其引导的成分可放于介词之后,作介词的宾语,if不能;如:

正: I worry about whether I hurt her feelings. 误: I worry about if I hurt her feelings.

5. whether可以引导从句,作主语、表语或同位语,if不能;如:

正: It was uncertain whether he would come. 误: It was uncertain if he would come.

正: His first question was whether Tom had arrived yet. 误: His first question was if Tom had arrived yet.

正: We must consider the question whether we will take these measures. 误: We must consider the question if we will take these measures.


whether if 可以互换吗 在哪些情况下可以呢

下面的几个情况可不可以

"Have you seen the film" He asked me. →he asked me whether I had seen the film.

"You've already got well, Haven't you" she asked.

→she asked whether I had a already got well.

He asked, "Are you a Party member or a League member"

→He asked me If I was a Party member or a League member,

这三个都做是否 是可以互换的

下面的情况不能互换:

1Whether可以与or not 连用构成whether…or not或者whether or not,if一般没有这种用法;

2.如果宾语从句是否定结构,则用if,而不用whether; 3.介词的宾语从句只能用Whether引导;

4、引导主语从句、表语从句、同位语从句时都用whether; 5Discuss decide 等动词后,通常只跟whether引导的宾语从句,而不跟if引导的宾语从句;

6 Whether后面可以接不定式短语,if不能 ;

7.在主从复合句中,为避免产生歧义,不用if而用whether,而使意义更加明;




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