请帮忙改正此句语法错误 谢谢

1.think之后的宾语从句“speak English can make you happy ”中，应用动名词作主语，speak改为speaking，即“You should think that speaking English can make you happy.”
2.think之后的宾语从句“speak English can make you happy ”中，亦可用it作为形式主语，即“You should think that it can make you happy to speak English.”相当于“You should think to speak English can make you happy ”.
最好用第一句的形式，更符合语言习惯。

You should think that speaking English can make you happy.
或
You should think that it can make you happy to speak English.

speak english can make you happy .
speak english 是错的。speak 是动词，speak english不能当宾语从句的主语。
可以用不定式或者动名词当主语。

You should think that to speak english can make you happy
You should think that speaking english can make you happy 。

You shoud think that speaking English can make you happy.