彼が英語を話すのを聞けば、彼が英語を母語とする人だと思うだろう。の英語

To hear him speak English, you would take him for a native.

To hear him speak English, you would take him for a native.

To hear him speak English, you would take him for a native speaker.

To hear him speak English, you would take him for an Englishman.

He speaks English like a native.

To hear him speak English, you would take him for an American.

I often listened to him speak in English.

To hear him speak English, one would take him for an Englishman.

Hearing him speak English, one would take him for an Englishman.

To hear him speak English, you would mistake him for an Englishman.

He can speak English just like it was his native language.

To hear him speak English, you'd think he was [you would take him for] British.

To hear him speak, you'd take him for a foreigner.

I think that he can probably speak English.

He has only just begun his English, and can not be expected to speak it.

He has to speak English.

Does he speak English?

Can he speak English?

Does he speak English?

Can he speak English?

Everyone knows that he speaks English well.

Can he speak English?

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

I wonder if he will become able to speak English.

He is superior to the rest in so far as he can speak English.

Has he become able to speak English?

Does he speak English?

He makes glaring mistakes in speaking English.

He is proficient in English―at home in English.

Nobody knows how much he can speak English.