问题 用所给的词的适当形式完成句子

1) I forgot to repair (repair) my watch last weekend, so I had to use my father’s. 为什么? 2) I  regretted making (make) such mistakes. My parents were angry with me. 为什么?

问题 句子中现在分词一般式与完成式的区别

 There has been a gentleman asking for you. 有位先生曾来见你。请问：句中的 asking for 为何不用 having asked for ?

问题 一个关于make sure的用法问题

That work is needed by next week，so make sure ______ to the deadline.A.you keep         B.keepingC.you'll keep      D.for keeping重点讲一下B和C选项!

问题 一道非谓语动词的选择题

— Li Hua is said  ______ abroad for four years. Do you know which country he studied in?— Australia.A. to have studied    B. studying  C. to be studying        D. having studied请问选择哪个？为什么？

问题 one car to every twenty people的to什么用法

问题 in the northeast China 与 in northeast China的区别

问题 down which的用法

Strict laws protect a park created at the heart of the mountain range, embracing many varied habitats, from alpine woods filled with snubnosed monkeys to the parallel gorges down which thunder the headwaters of three great rivers, the Yangzi, Mekong and Salween.我想问下这里down which thunder...

问题 问题补充中这句话的语法及句子结构分析

This and other promising findings about the life-changing effects of crises are the province of the new science of post-traumatic growth.

问题 wait用作及物动词（后接宾语不需要for)的用法

什么情况下wait+宾语不需要for?比如 wait your turn. 为什么它就不需要for呢?

问题 There is no more than与make happen的含义

问题 have to如何理解在句中的用法

In Kurdistan you have some problem that you have to, if you want to do business, if there’s planning and you give its billing.

问题 情态动词would用于虚拟语气与will的区别

在薄冰高级英语语法第十一章虚拟语气中讲到情态动词用于虚拟语气，例句 It might help a little if only you would keep clean. would 能否换成will?

问题 put through和get through表示接通电话的意思时有什么区别

问题 动名词在句子中的成分

请问下 动名词going by bus 和staying at home在下面两句中作什么句子成分？状语还是补语？1. You'd be better going by bus.2. The weather was so bad we'd have been better off staying at home.感谢赐教！

问题 life，这个词什么时候可数，什么时候不可数，要详细的讲解，谢谢老师！