Register Login
DioEnglish.com Return Index

voiceheart's Space http://www.dioenglish.com/?30830 [Favorites] [Copy] [Shares] [RSS]

Blogs

whether与if的区别

518 views. 2012-6-15 10:06 |

whether与if的区别
 
1)     在引导主语从句时,一般用whether,而不用if。
例如    Whether the German engine was the first to fly is not clear.
            并不清楚是否是德国发动机首先用于飞机的。
备注   在口语中,if也可以用于主语从句,但必须放句尾,看似是个宾语或表语从句。

2)   在引导宾语从句时,一般情况下whether和if可以通用。
例如    The policeman asked if / whether I had seen the accident.
            警察问我是否看见这场事故。

3)   只用whether的情况
例  1    He asked whether I wanted to go by air or by sea.
            他问我是想坐飞机还是坐船去。
            (从句中含有or,强调选择,这里只宜用whether)

例  2    He asked whether or not I wanted to insure my luggage.
            他问我是否想给行李保险。
           (只有whether后面可以直接跟 or not)

例  3    Bill asked whether, if I got the job, I’d move to New York.
            比尔问我如果找到工作,是否要搬到纽约去。
            (宾语从句中包括一个if从句,则宜用whether)

例  4    We discussed whether we should go there.
            我们讨论了我们是否应该去那里。
            (在discuss等动词后,只能用whether)
 

Post comment Comment (3 replies)

Reply lijuanandrea 2012-6-15 17:13
to sum up, whethe can be used in many situation, but if is limited in many cases.
Reply lijuanandrea 2012-6-15 17:18
welcome more blogs as this type
Reply voiceheart 2012-6-16 10:54
thanks,your level is high.

facelist doodle 涂鸦板

You need to login first Login | Register

每周一篇英文日志,坚持一年,你的英语能力将发生质的飞跃!

DioEnglish.com --- A Nice Place to Practice English and Make New Friends!

English Writing, English Blog, English Diary, 英语角, 英语写作, 英文写作, 英语交流, 英语日记, 英语周记, 英文日记, 英语学习, 英语写作网, 英语作文大全

Website Rules|Contact Us|茶文化|英文博客网 ( 京ICP备06064874号-2 )

GMT+8, 2024-5-16 08:37

Powered by DioEnglish.com

© 2008-2013 China English Blogs

Top