不定式作为非限定动词有体和时态的变化。例如:一般体 (to) do进行体 (to) be doing完成体 (to) have done完成进行体 (to) have been doing不定式也可以有被动语态,例如:(to) be done(to) have been done不定式符号to打在括号里,意思是to在有些场...
Jack has already finished homework since an hour ago.I have known about it since May.since+时间点,表示一段时间,谓语动词通常是可延续性的,为什么这里的句子谓语动词看似非延续,都是表示“结果”?难道since+时间点(一段时间)也可以用于...
When I was ten I was suddenly confronted with the anguish of moving from the only home I had ever known. My whole life, brief as it was, had been spent in that big old house, gracefully touched with the laughter and tears of four generations.touch with 是联系的意思吗?gracefully在这用法...
...s being consumed in restaurants and being exported. 2)break away: This is when something is being held in place, tied in
place, it gets separated.请教老师:以上2句中出现的being:was being consumed in restaurants and being exported 和is being held in
place, tied in place都是表示“...
...sports meet 与 Sports Day 的区别▲P41▲adventure和adventurous作定语时的区别▲P42▲wellness与health的区别go
bananas 是什么意思▲P43▲make exercise还是do exercise▲P44▲No. 2 Senior High School前面用不用定冠词▲P45▲in doing sth的用法do a survey, make a ...
请教曹老师,与将来事实可能相反的虚拟语气的从句should/were to do表示什么含义?如:If she should be here tomorrow, I would go with her.If we should fail In this, we would be ruined. 这两句的should肯定不表示“应该”,那表示什么?If we were to fai...