如题:They a football game from 7 to 9 last night. (watch)答案是were watching。不过我认为watched也说得通:watch a football game这整个延续性动作从7点开始,到9点结束,全部发生在昨天。所以watched到底可不可以呢?
比如:There are several
different ways to bind a book, for example you can stitch or
stick the pages together. 正确吗?我知道for example前面是句号的时候可以这么用,如果是逗号(如例句)或者分号呢?是否也是正确的?
前面有网友提到 after doing sth 的用法,有老师回答说也可以用 after having done,但我记得我的老师曾说过,这样的用法不地道,请问 after having
done的用法有权威的语法出处吗?参考:https://www.cpsenglish.com/question/51351