1.尽管我们不能帮助他们抗震，但我们可以帮他们重建家园。（fight against）
Although we can't help them fight against the earthquake, we can help them rebuilt their home.
2.我们认为至少掌握一门外国语是很重要的。
We believe that it is very important to master at least one foreign language.
3.我们将防止任何疾病发生。（prevent...form...）
We will prevent any diseases from appearing.
4.这是我曾经看过的最精彩的足球赛之一。
This is the most exciting football match I have never watched.
5.我盼望着2012年在伦敦再次见到你。（look forward to）
I am looking forward to meeting with you again at London 2012.