...的already只用于完成时,by引导的时间状语用于过去完成时和一般将来时,可是下面句子:he was the youngest of seven children and by the age of 5 he was already composing music.麻烦老师讲一下,already和by 引导的时间状语分别能用于什么时态,谢谢...
...好,曹老师,麻烦再帮我解惑一下,我看到你说过不定式和动名词作主语时,在表示比较抽象的一般行为和动作时,二者可以互换,如:To climb mountains is a good form of exercise= Climbing mountains is a
good form of exercise.但为什么下面这个句...
在《新英语语法教程》(何桂金,高纪兰,第一版)中看到有下面的说法:助动词have和助动词be不能连用。但I have been doing it for a long time. She has been a teacher for 30
years. It has been stolen by a boy. 应该都是have和be连用吧?谢谢!
To expand the business, Harold Chapman Jr. relocated the Doll Hospital and included repairs to other toys, leather goods, umbrellas, etc.老师,这边的用To expand 和 expanding 的区别在哪里?
Historic sites impress writers with their amazing beauty, which are a great source of ________.A. inspiration B. composition C. occupation D. combination老师,这题选A,但是B ,创作的来源和灵感的来源 有什么本质的区别吗?
Althoughit could be a problem if too many parents withdrew their children from school,it is a suitable option. 请问老师although和if 是虚拟语气用法么。 withdrew是过去分词。 另外if什么时候用虚拟是怎么来决定的?