问一句英语语法问题It is impolite to break into other people's house without kenockingat the door请问kenocking为什么要加ingmust we return this book this weeked请问this weeked前为什么不要加in 可以in吗?

英语语法问题.It seems that praise is like sunlight to us,we can't flower and grow without it. 英语语法问题 改错the most immediate reason for it being common for customers to buy online is convenience 一个小小的英语语法问题There is no need to know it.There is no necessity to know it.两个都是“没必要知道这件事”的原意 英语语法问题 求英语达人为什么 I found it easy to learn English well中it后不能带is,而I know it is not difficult for us to protect the environment 中的it 后就能有is? 高中英语语法问题（急需）I think it is no use doing. I think it no use doing.哪句对?这种叫做什么?求详解 问道英语语法的问题Why is ____ you are so late for class?(答案选A,我选D?)A.it thatB.that itC.it beD.that 问一句英语语法问题It is impolite to break into other people's house without kenockingat the door请问kenocking为什么要加ingmust we return this book this weeked请问this weeked前为什么不要加in 可以in吗? 一个英语语法问题,请进It is only when you devote yourself to it that____.A.will you manage itB.you will manage it以及下面句子对否?It is when I came back that I received your letter. 高中英语语法,it is 的强调用法如题 英语语法:it is +adjective +of ...+(not) to-infinitive 英语语法问题:in there／in hereHow hot it is in here!这句话中here前面带in,不是语法错误吗? 低级英语语法问题The ones on the shelf It is on the left 为什么第一句不加be动词,为什么不是The ones are on the shelf 英语语法有关的问题I think a map is the most useful.without it,you'd never find the right road.问题1：一句话里不是不能出现两个动词的吗?那think, is?问题2：you'd还原 英语语法有关It的用法此句 It 做形式主语： It is no good sitting up too late 熬夜没有好处那里的no 是不是有点问题 我觉得应该用 not 请详细解答 我想问一下一个英语语法的问题.Is it worth it?这个句子有语病吗?这个句子翻译过来是不是 值不值得 的意思呢?worth是adj形容词吧,后面可以跟it的吗?请问正确应该怎样? 英语语法be动词问题选择正确的答案填空：1.This postcard () great!(is,are)Yes,().(it is,they are)2.These stamps () beautiful!(is,are)Yes,().(it is,they)3.How big () they?(is,are)4.How long () it?(is,are)5.() a map of China,(It's,They'r 英语语法问题:这道题用there is为什么不行?here is和there is的区别是什么? 英语语法问题(what)Although Anne is happy with her success,she wonders___will happen to her private life.a.that b.what c.it d.this为什么it不可以?