1. again:

例：

If you're late again we'll leave without you. （如果你再迟到，我们就不等你、直接走了。）

The floor needs cleaning again. （地板又要扫了。）

It was nice to see you again. （很高兴再次见到你。）

Julie! It's your sister on the phone again. （朱莉，你姐又打电话来了。）

Can you say that again? I didn't hear. （你能不能再说一遍？我刚刚没听见。）

I'll never go there again. （我再也不会去那儿了。）

Mr Khan's busy. Can you try again later? （卡恩先生现在很忙，你能不能稍后再打来？）

2. once again: use this especially about something worrying or serious that has happened before 令人担忧或严肃的事情再度发生

备注：''once again''常用于正式的场合。

例：

Once again, the French army were totally humiliated. （法国军队再度惨败。）

Once again, I must remind you of the seriousness of the problems we face. （我必须再提醒你一次我们要处理的问题有多严重。）

Once again, the City Council has decided to ignore the interests of the taxpayers. （市议会的决定再次忽视了纳税人的利益。）

Once again, he was under arrest. （他又被逮捕了。）

3. yet again: use this when something has happened too many times before in a way that is very annoying 某事已发生过很多次，再次发生，很恼人

例：

Yet again, I was forced to ask my parents for money. （我没办法了，只好又向父母要钱。）

The opening of the new museum has been delayed yet again. （新博物馆的开馆仪式再次推迟了。）

Yet again, you're late turning in your assignment. （你作业又迟交了。）

It was the last day of their vacation and it was raining yet again. （今天是他们放假的最后一天，结果又下雨了。）

In 1997, the family moved house yet again. （1997年，他们再度搬家了。）

4. one more time/once more: again, and usually for the last time 再一次（通常是最后一次）

例：

I'm going to ask you just one more time: where did you get this money? （我最后再问你一次：这钱，你是哪来的？）

Can we practice the last part just once more? （最后一个部分我们能不能再排练一次？）

She wanted to see her grandfather once more before he died. （她想再见爷爷最后一面。）

The cost of living is once more on the increase. （生活成本又在上涨。）

5. fresh: 重新

例：

fresh attempt/look/start: one that is done again from the beginning in a new way, after you have been unsuccessful in the past

The army is planning a fresh attempt to regain control of the capital. （军队计划重新发起进攻，再度占领首都。）

I think we need to take a fresh look at the problem. （我觉得我们需要重新审视一下这个问题。）

I hope Jim and I can get back together and make a fresh start. （我希望我和吉姆能复合重新开始。）

6. not again!: say this when something annoying happens again or happens too many times 某件让人恼火的事又发生了

备注："not again!"常用于口语中。

例：

"Sue, Steve's on the phone asking for you." "Oh, not again!"（-苏，史蒂夫打电话找你。 -啊！又来了！）

"Not again!" said Anna, as the word CANCELLED appeared next to her flight number for the third time. （安娜说：“又取消了！”她的航班已经是第三次显示取消了。）