The students didn't manage to work outthe problem ______their teacher had explained how.
The students didn't manage to work outthe problem ______their teacher had explained how.
为什么不是unless而是until
为什么不是unless而是until
英语人气：830 ℃时间：2019-09-18 02:22:13
优质解答
这句话的意思是直到老师解释了怎么做,学生们才解决了问题.句中用的是完成时,因此用until.unless是除非,表示条件,如果这句话用unless的话就要换成the students can't work out the problem unless their teacher expl...
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