only

1.仅有的；唯一的used to say that no other or others of the same group exist or are there

2.最好的；最适当的used to say that sb/sth is the best and you would not choose any other

the only thing is…

问题是；麻烦的是；只是；不过used before mentioning a worry or problem you have with sth

1.只；只有；仅nobody or nothing except

2.仅在…情况下（或地点等）in no other situation, place, etc.

3.只不过；仅…而已no more important, interesting, serious, etc. than

4.只有；仅；刚刚no more than; no longer than

5.（直到）…才；（只是）…才not until

6.仅此而已；只能used to say that sb can do no more than what is mentioned, although this is probably not enough

7.（用于说明事情的恶果）只会，愈加used to say that sth will have a bad effect

8.~ to do sth不料；竟然used to mention sth that happens immediately afterwards, especially sth that causes surprise, disappointment, etc.

not only… but (also)…

不但…而且…both… and…

only just

刚才；刚刚not long ago/before

only too…

很；非常very

youre only young once

行乐当及年少时；青春只有一次young people should enjoy themselves as much as possible, because they will have to work and worry later in their lives

1.(informal)不过；但是；可是except that; but

1.无比的,独一无二的;最适当的

2.唯一的

1.仅仅;只,单,才;不过

2.结果却;不料

1.但是,可是

2.除了...;要不是...

1.used for emphasizing that an amount, number, size, age, percentage, etc. is small or smaller than expected

2.used for showing that a statement does not apply to anything or anyone else except the person, thing, action, place, etc. that you are mentioning

3.used for showing that there are no other things or people of the same kind as the one or ones that you are mentioning

4.used for adding a comment to something that you have just said which makes it less true or correct; used when you are going to mention a problem or a reason why something is not possible

5.used for saying that something is not better, worse, more important, more difficult, etc. than you are saying it is

6.no earlier than a particular time, day, week, etc.

7.used for emphasizing that something must happen before something else can happen

8.used for saying that the result or effect of something is bad or not wanted and has no positive qualities

9.used for showing that something or someone is the best