请帮我看看我造的句子有没有错..

问题描述:

请帮我看看我造的句子有没有错..
Play computer games will get in the way of schoolwork.
He was serious about the matter.
When I was young,I spend time on my clothes.
这几句话有错么?.要是错了,错在哪.

第一句开头应该是Playing
第三句应该是I spent