問題は君が彼女の英語を理解できるかどうかだ。の英語

The problem is whether you can follow her English.

Everybody knew she could speak English well.

Everybody knows she can speak English well.

I am worried about whether I will be able to understand the English that you speak.

I don't know if she can handle it in in English.

If you heard her speak English, you would take her for an American.

I'm curious as to what extent you are able to translate Japanese into English.

To hear her speak English, you would take her for an Englishwoman.

Your English is easy to understand.

It seems like she wants to learn English too.

I don't know if my English is improving.

I am worried about whether I will become able to speak English.

I can mostly understand your English.

I am trying to understand your English now.

Because it is written in simple English even a child can understand it.

I don't know if I am improving my English ability.

Her level is the same as mine's.

She grounded her students thoroughly in English grammar.

You can speak English about as much as your mother.

It's easy to understand your English.

It looked like that woman was understanding my English.

She speaks English as if she were a native speaker.

She instructs students in English.

She teaches students English.

Obviously the teacher can understand both English and French.

(obviously he can understand both English and French)

I was able to understand that English class well.

I heard her speak English fluently.

I hope that her English conversational ability is improving.

I'm surprised that you could understand Japanese.