英语If only he were here这里的only起到什么作用？
- if only he were here. 请问一下 为什么用 were 不用was
- 这里的“only”起什么作用？
- 英语中"if only"这个词怎么用？举个例子
- only if 和if only的用法.
if only he were here. 请问一下 为什么用 were 不用was
were 表示是对过去的不可能的情况的虚拟。本句虚拟语气，用were 代替was。
翻译：他要是在这里就好了！（实际上他不在这里。）
这里的“only”起什么作用？
楼主认真看我给你找的，你的问题在第三点：
only的几种特殊用法
在学习英语的过程中，我们常遇到only与其它词或结构搭配来表达不同的意思，现将这些用法示例如下：
一、only引导的词组或句子放在句首作状语时，通常要用倒装结构。如
Only in this way can you solve the problem.
只有通过这种方式你才能解决问题。
Only if you study hard can you pass the exam.
只有努力学习才能通过考试。
Only then did I realize my mistake.
只有那时我才意识到错了。
二、not only...(but also)出现在句首时，如果架连接的是两个句子，常用倒装。如
Not only did we lose all our money,but we also came close to losing our lives.
我们不仅丢了钱，还差点把命丢了。
Not only did he speak correctly,but he also spoke easily.
他不仅说得准确，而且说得很轻松。
三、only放在不定式前面，常表示不愉快或出乎人们的意料的结果。如
I went all the way to his home only to find hime out at a meeting.
我径直到他家里去，不料发现他出去开会了。
I hurried to the post office only to find it closed.
我匆忙赶到邮局，不料已经关门了。
She went home only to find her house burglarized.
她回到家里，发现房子被盗了。
四、“too...to...”结构中，表示否定意思，但在“only too...to...”结构中，only too = very，表示肯定意思。如
The patient is too weak to walk.
那个病人太虚弱了，走不动。
We are only too willing to do it for you.
我们非常愿意为你做那事。
I am only too delighted to accept your king invitation.
我非常高兴地接受你的邀请。
五、在“one of + 复数名词 + 定语从句”的结构中，定语从句一般被看作修饰复数名词，谓语要用复数形式。但在“the only one of + 复数名词 + 定语从句”的结构中，定语从句却被看作修饰“the only one”，谓语动词要用单数形式。如
This is one of the best novels that have been published in the past two years.
这是近两年出版的最好的小说之一。
He was the only one of the boys who was given a prize.
他是这些孩子中唯一受到奖励的。
She is the only one of the girls who has been to the US.
她是那些女孩中唯一去过美国的。
六、If only 为虚拟语气的一种，表示愿望或一个未实现的条件，多用于感叹句，其主句常常省略。如
If only she would marry me!
她要是能和我结婚该多好！
If only he had known about it!
他那时要是知道这件事该多好！
If only you could have been here earlier that day!
要是你那天再早点到这就好了。
If only there were forty-eighty hours in a day.
要是一天有48个小时就好了
英语中"if only"这个词怎么用？举个例子
要是...就好了..
Examples:
1. If only he had been here.
要是他当时在这儿就好了。
2. I dread the coming exams. If only I could have time to review my lessons.
我对即将到来的考试非常担心。如果我有时间复习该有多好啊。
3. If only I had another chance.
要是我再有一次机会就好了。
4. I am so tired. If only I can take the day off tomorrow.
太疲倦了。如果明天能不上班多好。
5. If only problems would come one at a time!
要是问题一次只发生一个该多好！
6. If only it clears up, we'll go.
只要天一放晴,我们就去。
7. If only one had an unlimited supply of money!
要是财源不断就好了！
8. She would be a very good player if only she could get it together.
她若能控制得当就能成为很好的选
only if 和if only的用法.
only if表示"只有"；if only则表示"如果……就好了"。If only也可用于陈述语气。
I wake up only if the alarm clock rings. 只有闹钟响了，我才会醒。
If only the alarm clock had rung. 当时闹钟响了，就好了。
If only he comes early. 但愿他早点回来。