原因状语从句:常由because, as, since和for引导。例如:Nonetheless, I am still in favor of space travel, for it has brought us many benefits. 时间状语从句:常由when和while引导。...
until的用法例句 1、Until 1982 he was senior lecturer in botany at Durham University.1982年以前他一直是达勒姆大学生物系的高级讲师。 2、The traffic laws don't take effect until the end of the year.交通法要到年底才生效。 3、It was not until 1911 that ...
until用于肯定句中时,句子的谓语动词必须是延续性动词。 eg: My teacher works in the office until 6 o’clock in the afternoon. 我的老师在办公室一直工作到下午6点。 在…not… until…句型中,主句的谓语动词要用终止性动词,如start,leave,arrive, finish, stop等...
(1).相当于in fact, in reality表示“事实上,实际情况是……” 例We had planed to finish the task today, but as it is we probably won't finish it until next week. (2).相当于方式状语从句,表示“照原样” 例Leave the table as it is. 3. as it were 相当于as ...
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