请教英语高手unless和until的区别David’s parents ——him to go to the Internet café again —— his grades improve. A. forbid; unless B. forbid; until 我觉得A和B 好像都对,到底哪个是正确答案呢?

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请教英语高手unless和until的区别David’s parents ——him to go to the Internet café again —— his grades improve. A. forbid; unless B. forbid; until 我觉得A和B 好像都对,到底哪个是正确答案呢?

请教英语高手unless和until的区别David’s parents ——him to go to the Internet café again —— his grades improve. A. forbid; unless B. forbid; until 我觉得A和B 好像都对,到底哪个是正确答案呢?
请教英语高手unless和until的区别
David’s parents ——him to go to the Internet café again —— his grades improve.
A. forbid; unless B. forbid; until
我觉得A和B 好像都对,到底哪个是正确答案呢?

请教英语高手unless和until的区别David’s parents ——him to go to the Internet café again —— his grades improve. A. forbid; unless B. forbid; until 我觉得A和B 好像都对,到底哪个是正确答案呢?
首先从字面意思上理解,unless是除非,如果不,要是不,until是直到..才
然后就是一般用法的问题了,until 一般用于完成时,而此题很明显只是一个强调性的句子,所以应该选A