The best way to learn English is by watching English language movies我知道可以说is to watch那可不可以说The best way to learn English is watching English language movies.

The best way to learn English is by watching English language movies我知道可以说is to watch那可不可以说The best way to learn English is watching English language movies.
The best way to learn English is by watching English language movies
我知道可以说is to watch那可不可以说The best way to learn English is watching English language movies.

The best way to learn English is by watching English language movies我知道可以说is to watch那可不可以说The best way to learn English is watching English language movies.
可以,其实这里不用加by,按你说的The best way to learn English is watching English language movies就是对的.
is后面的doing sth.作名词.

好的

去掉 language 最好在 is 后面加上that

我觉得可以啊。

不可以。因为有这个短语,by the way .和前面的the best way 相对应

The best way of learning English is by watching and understanding English Language movies.