本文目录
substitute for和with
用 next time 去代替 if only
if only 与only if的区别
only if:只有、除非,意思相当于unless,但用于肯定句,引导条件状语从句:I will go only if you go with me.除非你跟我一起走,否则我就不走(只有你跟我一起走我才走).
比较:unless,用于否定句:I won't go unless you go with me.
If only:只要,引导条件状语从句:If only it clears up,we'll go.只要天一放晴,我们就走.
要是……就好了,引导独立句:If only you had won the game!你要是赢了该多好啊.
Only if 用于句首,用倒装语序,Only if a teacher has given permission is a student allowed to enter this room. 只有得到老师的允许,学生才能进入这间教室。
if only: 但愿 表示对现在和将来的愿望,或与过去事实相反的愿望。 If only it would stop raining 真希望雨能停。
一、if only的用法。
if only后面跟的是虚拟语气的句子,表示与事实相反的假设。
If only I had more money, I could buy some new clothes. 要是我有更多的钱,我可以买些新衣服。
If only he had arrived in time. 要是他能及时赶到就好了。
If only I had known it, I wouldn't have troubled him. 要是我知道,我就不会麻烦他了。
If only that photograph weren't missing. 要是那张照片没丢失该多好。
二、only if的用法。
only if后面跟条件状语从句,用陈述语气,后面用部分倒装句,be动词、助动词和情态动词放在主语之前,表示一种充分非必要条件,意思是只要。
Only if you passed the entrance exam and became a college student, will I accept you as a friend.
只要你通过高考,成为大学生,我就会认你为朋友。
Only if we persist in carrying out the open door policy, will we achieve greater success in every field.
只要我们坚持改革开放,我们就能在各个方面取得更大的成就。
only if和if only的区别是什么
only if:除非;只要…就;只有,只有当…;if only:只要;但愿
二者区别:
一、only if意为“only on the condition that, as long as”,“只要;假如”.它用于陈述事实或必要的条件,比if所表达的语气更强烈.
例如:You'll pass this course only if you study. 只要你学,你就会通过这门课.
二、if only则有两种含义.
第一种含义与only if近似,意为“as long as”,“只要”.
例如:If only it clears up, we'll go. 只要天一放晴,我们就去.
第二种则是“expressing a wish or assumption”, “但愿;如果……就好了”.它用来表达一个不可能实现的愿望或假设,句子要用虚拟语气.
例如:If only she would come!要是她能来就好了!
扩展资料:
有关only的习语:
1、the only thing is…(informal) 问题是;麻烦的是;只是;不过
例如:I'd love to come─the only thing is I might be late.我很想去——只不过我可能会迟到。
2、in name only名义上;有名无实
例如:He's party leader in name only.他只是名义上的政党领袖。
3、one and only绝无仅有的;唯一的;有名的
例如:Here he is, the one and only Van Morrison!
他来了,这盖世无双的范∙莫里森!
虚拟语气if only的三种用法
用一句话,以你要求的几种时态的虚拟语气:我要是在这儿就好了。
现在时:If only I were here.
过去时:If only I had been here.
将来时:If only I would be here.
动词向前推一个时态。
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