E) 在"no sooner than"、"hardly/ scarcely ……when"、"before"、"prior to"等句型中,主句要求完成时。 例:I haven't met that professor prior to today.(以前我从未见过那位教授。) 4. 现在完成进行时(have been doing) 用法:表示某一动作开始于过去某一时间,延续...
A. studied B. studying C. to have studied D. to be studying 11) As the light turned green, I stood for a moment, not ___, and asked myself what I was going to do. A. moved B. moving C. to move D. being moved 3.
While there’s a long way to go, the trend lines for renewables are spiking。 The pace of change in energy sources appears to be speeding up—perhaps just in time to have a meaningful effect in slowing climate change。 What Washington does—or does...
3.Why do some students dislike studying at school? Several factors can account for the worrying phenomenon of students' weariness of study. Rote learning might be the bigge...
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