大酸杏儿
1、含义不同
If only的意思是但愿，真希望；only if的意思是只有当，只有。
2、用法不同
if only引导条件句，通常用来表示说话人对某事所寄予的某种强烈愿望，相当于as long as。
only if 引导的是条件状语从句，是一个对“条件”限制更严的“限制性条件状语从句”，它有一种增强主句语势的作用。
例句：
If only we can get to the next petrol-station we'll be all right.
但愿我们能到达下一个加油站，那我们就没问题了。
Syria will attend only if the negotiations deal with issues of substance.
只有在谈判涉及重大问题时叙利亚才会参加。
扩展资料
词汇解析：
1、If only
英文发音：[ɪf ˈəʊnli]
中文释义：（表示强烈的愿望）但愿，真希望
例句：
If only the banks would lend money without limit!
但愿银行能无限制地贷款！
2、only if
英文发音： [ˈəʊnli ɪf]
中文释义：只有当，只有
例句：
The placebo effect can be understood only if we acknowledge the unity of mind and body.
只有我们承认身心一体，安慰剂效果才能被理解。
艺术边上观望
desire既能做名词也能做动词，那么你知道desire做名词和动词分别都是什么意思吗?下面我为大家带来desire的英语意思和相关用法，欢迎大家一起学习!
欲望;愿望;希望;请求
欲望;愿望;希望;请求
英 [diˈzaiə] 美 [dɪˈzaɪr]
desire的用法1：desire的基本意思是“想要,期望”,指“人强烈地希望、愿意或决心做某事或获得某物”,有尽力争取的意味,是及物动词,可接名词、代词、动词不定式或虚拟的that从句作宾语。
desire的用法2：desire后接表示物的名词作宾语时,后面可接被动词不定式(主动式或被动式)或过去分词作宾语补足语。
desire的用法3：desire是表示愿望的动词,通常不用于进行体。
1. The desire to be a mother may creep up on you unexpectedly.
你会不知不觉地产生想当母亲的渴望。
2. She confessed to her parents her desire to act.
她向父母坦言了自己想演戏的愿望。
3. I had a strong desire to help and care for people.
我非常渴望能够帮助和照顾他人。
4. The sight of him entering a room could flood her with desire.
见到他进入房间会让她心中欲望澎湃。
5. He was extremely devious in his efforts to achieve his heart's desire.
他在设法得到自己的中意之物时会不择手段。
6. Home ownership has been an overarching and innate desire of the British.
拥有私宅是所有英国人心中压倒一切和根深蒂固的强烈愿望。
7. They seem to have lost their desire for life.
他们似乎已丧失了对生活的热望。
8. Men's sexual fantasies often have little to do with their sexual desire.
男性的性幻想通常和他们的性欲没什么关系。
9. It never occurred to him that she might not desire him.
他从没有想过她可能不想跟他上床。
10. She felt an overwhelming desire to have another child.
她一心想再要一个孩子。
11. My desire to be rich was an insane, unwholesome, oppressive desire.
我对财富的渴望疯狂、病态，犹如心头的一块重石。
12. This condition decreases sexual desire and responsiveness.
这种情况会降低性欲和性敏感度。
13. Meg fought down the desire to run.
梅格极力忍住不跑。
14. Her desire was closer to passion than love.
她的欲望更近似于激情，而非爱情。
15. He had lost his desire to live.
橄榄色的水
if only....要是.....多好！If only I had known you then," he said wistfully. “要是我那时候认识你就好了，”他伤感地说only if...只要…就；只有，只有当…；除非You can make progress only if you are modest. 惟虚心乃能进步。
优质英语培训问答知识库
