1) He would never admit to be wrong.

(2) She as well as I has a mobile phone.

(3) I could do nothing but to tell him the truth.

(4) I managed to get there on time,but still late.

(5) What he said is difficult to be understood.

答案：

1、把be改成being

2、正确

3、去掉to

4、managed改成tried

5 to be understood改成to understand 这里虽然有被动的意思，但是不能用被动语态

1. Look! The boys play footall on the playground.

2. He went out before dark and came back half a hour later.

3. The students are interesting in learning drawing.

4. It took me some times to work out these physics problems.

5. It’s time for supper now. Let’s stop to work now.

6. How many did you pay for the colour TV set?

7. What do your father want you to do when you grow up?

8. There are some tea left at the bottom of the cup.

9. He can sing in Japanese, and so do I.

10. One of the books are written in Chinese, and the rest are in English.

【答案与解析】

1. play改为are playing。根据句中的 look 可知，此处应用现在进行时。

2. a 改为 an。hour 的读音以元音开头，故其前用an。

3. interesting改为interested。be interested in 意为“对……感兴趣”。

4. some times 改为 some time。some time 意为“一段时间”、“一会儿”。而 times 意为“次数”。

5. to work 改为 working。stop to do sth 意为“停下来去做某事”，stop doing sth意为“停止做某事”。

6. How many 改为How much。询问价格用how much。

7. do 改为 does。因句子主语是 your father，为单数。

8. are改为is。因tea为不可数名词。

9. do 改为 can。因前面的陈述句谓语用的是can。

10. are改为is。因句子的真正主语是one，不是books。