...单一的动作。我想了一些表述:I have knocked at the door three times.I have been knocking at the door three times.(但是进行时态又不能和表示次数的状语连用)I knocked at the door three times.请问您上面几种表述有对的吗?
...时,but可以省略,代之以分号:Not only has she been late three times; she has also done no work.Not only do they need clothing, but they are also short of water.非正式语体不太使用这种结构,而更喜欢用其它结构,如:We don’t only go there in winter. We go in summ...
...是什么语法现象?I remember we went bike riding together last fall when he visited you.1.在句子里的“went bike riding”,这是什么语法现象?为什么不写成象“go swimming/fishing/shopping/camping”这样呢?2.went bike riding与went riding意思一样吗可以互...
... you promise to be back before eleven o'clock.老师,as long as+从句时,后面的状语状语是修饰形容词long吗,第一句long是名词吗,但找不到有名词词性,第二句as long as是如何理解分析好,as+从句是修饰前面long,as long as....是整体作状...