1.The man enjoys live in the country because the air is fresh. （enjoys living）
2.With the(去掉the,smile是个抽象名词,不加冠词) smile they were palying with water.
3.How do you get on to（get on with 固定搭配,和某人相处很好的意思.） him?
4.I think English is much（可以在much后加上than,也可以去掉much） interesting than science.
5.Can you hear somebody（somebody改为anybody,否定句中） singing?
6.Would you please not to （去掉to,would you do 你愿意作什么?）cry again?
7.My father was angry with me to （to改为for,表示原因.）saying so.
8.I found that（把that改为it,it在此做形式宾语） difficult to speak English well.
9.It`s a quite（quite a,quite是副词非常之意） nice elephant.
10.He was very tired,so he asked his mother don`t（ask s b not to do sth不定式的否定.） wake him up.