（一）句子结构错误

1． 主从句叠置

1) There are more and more students like to use the computer.

2) There are still many problems should be noted and resolved.

2． 简单句叠置

I like chatting on line very much, I go to the net bar almost every weekend.

3． 从句叠置

As is known to all that computers play an important role in many fields of our life.

4． 句子成分缺失

If work hard, we will surely be successful.

5． 语序错误

1)    Why college students spend more and more time on the computer?

2)    I often wonder where have they got their money.