In England tea didn't appear until 1660, but in less 100 years he had become the national drink. 这里用了过去完成时had become, 过去完成时是过去的过去,这里had become是在强调发生在哪个过去动作之前的?谢谢,盼着专家老师解惑。
The old building is where the clerks live,and the blue one is where the spare parts ______.A. are producing B. being produced C. produced D. are produced老师,您看一下这一题的时态,还有这一题为什么要用被动语态啊?请老师详细讲解这道题!
老师好,这里的完成时能否替代为其他时态,比如过去时,原文这样用有什么好处呢-The largest change in recent generations has been to our diet, although other critical elements of health — water, exercise, sun exposure, and sleep — also undergoing major shifts.&nbs...
Whether he is (coming) has (not been decided).The manager with some workers (was working) during the holidays.第一句的第一个空为什么是进行时态? 而第二个空,decide为什么得用被动呢? 第二句为什么谓语仍然用单数而不是复数?
...什么不用 go back to
do,而不用go back to doing 呢?附全文:When John
Todd was a child, he loved to explore the woods around his house, observing how
nature solved problems. A dirty stream, for example, often became clear after
flowing through plants and along rocks where tiny creatures...