英语...帮忙看看有没有错误...

英语...帮忙看看有没有错误...
初学英语...各位帮忙看看有没有错误,有的话应该怎么改?呵呵,水平不咋地,见笑了...
1、I bought the house 3 yaers ago.
2、He has been abroad for 6 months.
3、He always gives me a hand when I am in trouble.
4、He had worked as a dustman since 1988.
5、The fireman rescued her from the firestorm.
6、He was so hungry,so he went to a restaurant for a big meal.
7、He sent me off to school last summer.
8、He looked very hungry,so I cooked a meal for him.
9、He examined the goods,and then bought.
10、He worked for me,and I paid for them.
11、He is a person full of industry.
12、My father gave me a cinema as borthday present last year.
13、Anymore information,please tell me at the first time.
14、He hadn't finished the work since last April.
15、He has just finishde the work up until now.
16、He finished the work just 3 weeks before.
17、He don't finish the work ever now.
18、He don't finish the work yet.