281. 昨天发生了一起交通事故。

　　A traffic accident took place yesterday.

　　282. 我取代了他。

　　I took the place of him.

　　283. 每天玩电脑游戏占用许多时间。

　　Playing computer games takes up a lot of time every day.

　　284. 我经常一出去就关上灯。

　　I often turn off the light as soon as I go out.

　　285. 刚才我阻止他把灯打开。

　　I stopped him from turning on lights just now.

　　286. 他把电视开得很大。

　　He turned up TV very loudly.

　　287. 我看见她在教室里走来走去。

　　I saw her walk up and down in the classroom.

　　288. 我过去害怕黑暗。

　　I used to be afraid of the dark.

　　289. 我习惯于晚饭后去散步。

　　I am used to going for a walk after supper.

　　290. 我很抱歉让你等了这么长时间。

　　I am sorry to keep you waiting for me so long time.

　　291. 这道数学题太难，我做不出来。

　　This math problem is too difficult for me to work out.

　　292. 我一点都不担心我的英语。

　　I don’t worry about my English at all.

　　293. 你最好记下地址。

　　You had better write down the address.

　　294. 我会尽可能经常给你写信。

　　I will write to you as often as possible.

　　295. 总之，忘记不高兴的事，继续努力学习。

　　In a word, forget the unhappy thing and keep on working hard at your lessons.

　　296. 我相信如果你努力，一定会成功的。

　　I'm sure you can be successful if you try your best.

　　297. 你读的书越多，你获得的知识就越多。

　　The more books you read, the more knowledge you will get.

　　298. 很高兴收到你的来信。

　　Nice to hear from you.

　　299. 只要你用心，没有什么是不可能的。

　　Nothing is impossible if you put your heart into it.

　　300. 我期待你的好消息。

　　I’m looking forward to your good news.