比如说:
He could go there and studies/study English.
这里and后面的study Enligh, 是could study Enligsh 的简化呢,还是应该写成 studies English?
再比如说
Cell phones can be used to take photos, to surf the Internet and to watch movies.
后面的to surf the Internet 的to 和 to watch movies.的to 可以省略的吗?