话题 It should surprise no one that

话题 If it hadn't been for...

话题 It’s very kind of you

话题 It was my first time doing

话题 as it was in Roman times

话题 if it hadn’t been for…

话题 It is sb/sth doing sth

话题 It was the first time that...

问题 It has been three months since we had winter vacation的理解

老师好！在理解句子It has been three months since we had winter vacation的时候我遇到问题：have winter vacation这个动词短语的动词have是非延续动词还是延续性动词？如果have在这里是非延续性动词，It has been three months since we had winter vacation是...

问题 It is adj of/for sb to do sth的句子成分

It is very nice of them to help me out.It is important for us to master the cues of computers．for me, of sb 作什么成分？

问题 as it were在句中的位置

我知道，as it were是一个固定搭配的虚拟语气用法，它的意思是“可以说是”“姑且这样说”，它在句中的位置是怎样的？是放在句首、句中还是句末？

问题 do so, do it, do that的用法区别

do so, do it, do that 的用法区别关于这三个表达的区别，在网上查了好多资料，好像都没有讲清楚，特请专家老师帮我区分一下，谢谢！

问题 ​It is difficult to do sth的句子成分

It is difficult to understand what she's talking about.请问句中的to understand是什么成份？谢谢！

问题 it is +adj. +(for/of+sb.)+to do sth.

It's wrong of you to take shelter under the tree in the storm.问：语法上讲，it is +adj. +(for/of+sb.)+to do sth.  ，此句型中到底何时用for 何时用of  取决于其前的形容词，若此形容词是表示人的属性的可以用来修饰人的，比如：kind , clever 时用of sb...

问题 时态填空题

_____ yesterday? No, it was a nice day. (rain)括号填did it rain还是 was it rain还是都可?我填的答案是was it rain, 但正确答案是did it rain,想知道为什么这样填以及我的答案是不可以吗？还是这两个答案都正确呢?