D only if:
意思是只有當(只是在...的時候)
只有兩邊都同意,才有可能在這個國家建立長久的和平.
if only:要是...多好
Examples:
1.If only he had been here.
要是他當時在這兒就好了.
2.I dread the coming exams.If only I could have time to review my lessons.
我對即將到來的考試非常擔(dān)心.如果我有時間復(fù)習(xí)該有多好啊.
3.If only I had another chance.
要是我再有一次機會就好了.
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!
要是問題一次只發(fā)生一個該多好!
6.If only it clears up,we'll go.
只要天一放晴,我們就去.
7.If only one had an unlimited supply of money!
要是財源不斷就好了!
8.She would be a very good player if only she could get it together.
她若能控制得當就能成為很好的選手.
only if:
conj.只有當(只是在...的時候)
Examples:
1.The company will succeed only if it have sufficient backing.
只有當該公司獲得足夠的資助,它才會成功.
2.A compound proposition that has components joined by the word and or its symbol and is true only if both or all the components are true.
綜合命題由和或其符號所連接的子句組成的復(fù)合命題,只有當所有子句為真時,該句才為真
3.I can buy the house only if a mortgage for 2000 dollars is available.
只有拿到兩千美元的抵押貸款,我才買得起那棟房子.
4.Only if I get a job will I have enough money to go to school.
我只有找到了工作才有足夠的錢上學(xué).