it is +adj.+that从句 这种结构所指的“从句”是什么从句？ 从句要用虚拟语气吗? It is + adj. +that ...这种句型后面都一...
It is + adj.+that \u8fd9\u79cd\u53e5\u578b\u540e\u9762\u90fd\u4e00\u5b9a\u8981\u7528\u865a\u62df\u8bed\u6c14\u662f\u5417\u4e0d\u662f\uff0c\u53ea\u662f\u4e00\u90e8\u5206\u5f62\u5bb9\u8bcd
\u8868\u60c5\u7eea\uff0c\u89c2\u70b9\u7684\u5f62\u5bb9\u8bcd\u6216\u540d\u8bcd\u8981\u7528\u865a\u62df\u8bed\u6c14.\u5982\uff1anecessary\u3001important\u3001impossible\u3001natural\u3001strange\u3001surprising\u3001funny\u3001right\u3001wrong\u3001better\u3001a pity \uff0cthe shame \uff0cno wonder\u7b49\u3002\u53e5\u578b\uff1aIt is.......that +\u4e3b\u8bed\u4ece\u53e5\uff0c\u4ece\u53e5\u7684\u8c13\u8bed\u52a8\u8bcd\u5e38\u7528should+\u539f\u5f62\u4e14should\u7684\u7701\u7565\u8981\u770b\u60c5\u51b5\u800c\u5b9a\u3002
eg:
Do you think it is necessary that he (should)not be sent to Lingbao.\uff08should\u8868\u793a\u201c\u5efa\u8bae\u201d\u7684\u8bed\u6c14\uff0c\u53ef\u7701\u3002\uff09
It is strange that such a person should be our friend.\uff08should\u8868\u793a\u201c\u7adf\u7136\u201d\u7684\u8bed\u6c14\uff0c\u4e0d\u53ef\u7701\u3002\uff09
\u5947\u602a\u7684\u662f\u8fd9\u6837\u4e00\u4e2a\u4eba\u4f1a\u6210\u4e3a\u6211\u4eec\u7684\u670b\u53cb\u3002
\u4e0d\u4e00\u5b9a\u3002\u5982It is true that the earth travels round the sun.\u5730\u7403\u7ed5\u592a\u9633\u8f6c\uff0c\u8fd9\u662f\u4e8b\u5b9e\u3002
It's kind of you that you have helped you so much these years.\u8fd9\u4e9b\u5e74\u4f60\u5e2e\u4e86\u6211\u8fd9\u4e48\u591a\uff0c\u4f60\u8fd9\u4eba\u771f\u597d\uff01
It was right that the temple was rescued.\u62ef\u6551\u8fd9\u5ea7\u5bfa\u5e99\u662f\u505a\u5f97\u5bf9\u7684\u3002
\u8fd9\u79cd\u7ed3\u6784\u4e2d\u7684it\u662f\u5f62\u5f0f\u4e3b\u8bed\uff0c\u771f\u6b63\u7684\u4e3b\u8bed\u662f\u7531\u8fde\u8bcdthat\u5f15\u5bfc\u7684\u4e3b\u8bed\u4ece\u53e5\u3002
\u8fd9\u79cd\u7ed3\u6784\u53ef\u4ee5\u6362\u6210It is + adj. +for+n.+\u4e0d\u5b9a\u5f0f\u7684\u590d\u5408\u7ed3\u6784\u3002\u5982\uff1a
It is quite likely that the meeting will be put off till tomorrow.\u4f1a\u8bae\u5f88\u6709\u53ef\u80fd\u63a8\u8fdf\u5230\u660e\u5929\u5f00\u3002
=It is quite likely for the meeting to be put off till tomorrow.
是主语从句。不用虚拟语气。在主语从句中, 为了防止句子头重脚轻，通常把形式主语it放在句首位置，真正主语搁置于句末用it作形式主语的结构，如下：
1、主语从句常用it作形式主语，一般常用句型为：It is+{名词/形容词/过去分词}+主语从句。
2、强调句则不同，它的结构是：It+be+被强调部分+that+从句。
3、It is +名词+that从句。
4、It is +形容词+that从句。
5、It +不及物动词+that从句。
6、It is+过去分词+that从句。
扩展资料
一、主语从句不可位于句首的五种情况：
1、if引导的主语从句不可居于复合句句首。
2、It is said , (reported) …结构中的主语从句不可提前。
3、It happens…, It occurs… 结构中的主语从句不可提前。
4、It doesn’t matter how/whether …结构中的主语从句不可提前。
5、含主语从句的复合句是疑问句时，主语从句不可提前。
二、What与that在引导主语从句时的区别：What引导主语从句时在从句中充当句子成分，如主语、宾语、表语、而that则不然。
三、宾语从句用以区分主语从句的几个特征：
1、引导词：what\which\whose\when\whether\if\where
2、宾语从句必须是用陈述语句。（名词性从句都是陈述语序）。
这个句子是主语从句。从句在当一部分表达情绪，观点的形容词或名词才要用虚拟语气，如：necessary、important、impossible、natural、strange、surprising、funny、right、wrong、better、a pity ，the shame ，no wonder等。
在主语从句中, 为了防止句子头重脚轻，通常把形式主语it放在句首位置，真正主语搁置于句末用it 作形式主语的结构。
例句：
1、It is important that we all should attend the meeting.
翻译：重点是我们都应该出席这个会议.。
2、It is certain that he will win the match.
翻译：他肯定能赢下这场比赛。
3、It is funny that he dress like a monkey.
翻译：他穿着像只猴子，非常搞笑。
扩展资料：
(1) It is +名词+that从句
It is a fact that … 事实是…
It is an honor that …非常荣幸
It is common knowledge that …是常识
(2) it +不及物动词+that从句
it seems that… 似乎…
It happened that… 碰巧…
(3) it is+过去分词+that从句
It is reported that… 据报道…
It has been proved that… 已证实…
是主语从句，it是形式主语。
如果adj.是表示主观看法的形容词，要用虚拟语气 should+do,英国英语可以省略should
比如：It is important that he (should) go to school.
你好，这个句子是由主语从句转换来的
1） 在主语从句中, 为了防止句子头重脚轻，通常把形式主语it放在句首位置，真正主语搁置于句末
用it 作形式主语的结构
(1) It is +名词+that从句
It is a fact that … 事实是…
It is an honor that …非常荣幸
It is common knowledge that …是常识
(2) it is +形容词+that从句
It is natural that… 很自然…
It is strange that… 奇怪的是…
(3) it +不及物动词+that从句
It seems that… 似乎…
It happened that… 碰巧…
(4) it is+过去分词+that从句
It is reported that… 据报道…
It has been proved that… 已证实…
2）常规主语从句，即句子在复合句中充当一个主语
3）主语从句的时态：不受主句的时态影响和限制。
如：It is important that we all should attend the meeting.
其实就是 that we all should attend the meeting is important
具体可以参考
http://baike.baidu.com/view/100914.htm
希望帮到你
that后面引导的叫主语从句。it是形式主语，真正的主语是that后面的主语从句。不必用虚拟语气。
扩展阅读：it is adj that should ... have fun doing ... how fun it is to play ... it is+adj+doing ... it is adj for sb to do ... it is manifest that ... think it adj to do sth ... it is strange that ... once upon a time ...
