1. 正当我父亲翻阅晚报时，他突然惊讶地喊了一声。

2. 到他们回来之时，我将完成我的工作了。

3. 她因比赛时踝关节扭伤，呆在家里。

4. 上星期他作了眼科检查。

5. 男孩昨天说太阳比月亮要大。

答案：

1.My father was looking through the evening paper when he suddenly let out a cry of surprise.

2.I shall have finished my work by the time they come back.

3.She stays indoors because he sprained his ankle in one match.

4.He had an eye test last week.

5.The boy said the sun is bigger than the moon yesterday.