Guopeng think he speak English don't well.为什么是病句
问题描述：
Guopeng think he speak English don't well.为什么是病句
答
是病句
Guopeng thinks（that） he speaks English isn't good
或者
Guopeng thinks he isn't doing well in English speaking
Guopeng属于第三人称单数 所以后面的动词用-s形式
答
病句，
首先Guopeng为第三人称，所以动词应加s，
他认为他讲英语不好，在做否定的时候应该是主句否定，所以正确应为
Guopeng thinks he doesn't speak English well.
但是也有一些复合句的否定形式是否定从句的，具体情况再具体分析吧
答
Guopeng doesn't think he speak English well
答
Guopeng thinks he doesn't speak English well.
答
Guopeng doesn't think he speak English well.
否定时是主句否定.
答
Guopeng doesn't think he speaks english well