until 直到.为止
He taught me English until the class was over.
他教我英语,直到下课为止.
not until 直到.才
It was not until the class was over that he began to teach me English.
直到下课之后他才开始教我英语.
until 直到.为止
He taught me English until the class was over.
他教我英语,直到下课为止.
not until 直到.才
It was not until the class was over that he began to teach me English.
直到下课之后他才开始教我英语.