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英语语法知多点
英语语法存在句知识点：there be结构的主语可以是代词吗
there be结构中的主语可以是代词，如：
There’s but we two.
只有我们两个人。
Let’s see, there’s you and me…
让我想一想，有你和我……
I’m old and he is my son. There is only he to take my body to the grave.
我老了，他是我的儿子。只有他给我送葬了。
英语语法强调句知识点：判断此题是定语从句还是强调句。
例题解析：
It was in the small house _________ was built with stones by his father _________ he spent his childhood.
A. which, that B. that, which C. which, which D. that, where
答案选A，填对此句的关键是要弄清第二空必须填 that，因为这是一个强调句，被强调部分为 in the small house (以及修饰它的定语从句 which was built with stones by his father)。又如：
(1) It was the boy _________ had been in prison _________ stole the money.
A. who, where B. that, how C. who, that D. that, which
【分析】此题答案选C，全句为强调句，被强调成分是 the boy (以及修饰它的定语从句who had been in prison)。
(2) It was just in the room _________ he was born _________ he died.
A. where, which B. that, that C. where, that D. which, that
【分析】此题答案选C，全句为强调句，被强调成分是 in this room，where he was born 为修饰 the room 的定语从句。
强调句与其他从句的比较：
1. 强调句与主语从句的比较：
强调句将句子中的it is / was …that同时省去，句子仍然成立;而主语从句将that与后面部分代替it，成立。如：
(1) It is Li Lei’s brother that you met in the street yesterday. 你昨天在街上所见到的就是李蕾的兄弟。
本句若将It is 及 that同时省去为：You met Li Lei’s brother in the street yesterday. 句子同样成立，因此前面的句子是强调句型。
(2) It is exciting that we have succeeded in sending up Shenzhou V. 我们成功地发射了神舟五号这件事情真令人兴奋。
本句若将It is 及 that同时省去为：We have succeeded exciting in sending up Shenzhou V. 显然句子错误，因此，前面句子不是强调句型，而是主语从句。
2. 强调句与定语从句的比较：
◎强调句中的It没有实际意义，It be与that可同时被省略;而定语从句中的It是主语，It be与that不可同时省略;
◎强调句型中be的时态须跟后面句子的时态相一致;而定语从句中主句谓语动词be的时态须由主句的时间确定
◎强调句将句子中的that不能省略，并且即使前面的名词是事物时，也不能将that换成which;而定语从句中的that作宾语时可被省略，并且当先行词是事物时可用which代替。
◎当it be后面的时间、地点名词作主语、宾语或表语时，引导词可用that / which;而作其他成分时，引导词须用when / which。如：
(1) It is an English book (that / which) I bought yesterday. 它是我昨天买的书。(本句是对What is that?问句的回答，that所引导的是定语从句，that可被省略)
It was the English book that I bought yesterday. 昨天我所卖的就是这本书。(本句相当于对I bought the English book yesterday中an English book进行强调)
(2) It was a room where we used to have meetings. 它是我们过去常在开会的房子。(where 所引导的从句对前面的room进行说明，它是定语从句)
It was in the room that we used to have meetings. 过去我们开会就在这间房子里。(in the room是被强调的部分，本句是强调句型)
(3) It is a day when the people celebrate their victory. 这是人们庆祝他们的胜利的日子。 (when所引导的从句对a day进行说明，是定语从句)
It was on that day that people celebrated their victory. 就在那一天，人们庆祝了他们的胜利。(强调on October 1, 1949)
3.强调句与状语从句的比较：
◎状语从句句首的It本身就是句子的主语;而强调句首的It不作任何成分也没有实际意义。
◎状语从句的连接副词that及句子前面的It be不能去掉。
◎状语从句的引导词可以是when / where，而强调句型中的that不能用其他词代替。如：
(1) It is such an interesting book that we all like it very much. 它是一本如此有趣的书，我们大家都非常喜欢。(结果状语主从复合句)
It is such an interesting book that we all like very much. 我们大家都非常喜欢的就是一本如此有趣的书。(强调such an interesting book)
(比较：It is such an interesting book as we all like very much. 这就是我们大家都非常喜欢的如此有趣的书。定语从句)
(2) It was already morning when he woke up. 当他醒来时，已经是早晨了。(时间主从复合句)
It was the next morning that he woke up. 就在第二天早晨他醒来了。(强调the next morning)
英语语法倒装句知识点：“only+状语”置于句首句子要倒装。
例题解析：
Only in this way __________ able to finish the work in time.
A. can you be B. are you C. you can be D. you are
此题应选 B。容易误选D。至于A，C，这比较容易排除，因为情态动词 can 不能与 be able to用在同一谓语中。本题之所以要选B而不选D，主要是因为句首用了only in thisway 的缘故，按照英语语法规则：“only+状语”位于句首，句子通常要用倒装语序(部分倒装——用一般疑问句形式)。如：
1. “only 副词”位于句首。如：
Only then did I realize that I was wrong. 只是到了那时我才意识到是我错了。
2. “only+介词短语”位于句首。如：
Only by working hard can you succeed. 只有努力工作你才能成功。
Only in the reading-room can you find him. 你只有在阅览室才能找到他。
3. “only+状语从句”位于句首。如：
Only when one loses freedom does one know itsvalue. 一个人只有在失去自由后才知道自由的可贵。
注意：若位于句首的不是only+状语，而是 only+宾语等，则通常无需倒装(但有时也可以倒装)。如：
Only a policeman the children saw in the street. 孩子们在街上只看到一个警察。
Only one more point will I make. 我只再说明一点。
英语语法感叹句知识点：感叹句的基本句型
【句型一】What + (a / an) + 形容词 + 名词 + 主语 + 谓语!
What a clever boy he is! (他是个)多么聪明的男孩啊!
What an interesting story it is! (这是个)多么有趣的故事啊!
What fine weather it is! 多好的天气啊!
What beautiful flowers they are! (它们是)多么漂亮的花啊!
【说明】 在感叹句中，What a / an 常用来修饰单数可数名词，若其前面的形容词为元音开头，则用 an。what 是用来修饰复数可数名词和不可数名词。但有些不可数名词，如 rain, surprise, breakfast, lunch 等，当前面有形容词修饰，使抽象名词具体化时，则要用 what a / an，如：
What a heavy rain it is! 多大的一场雨啊!
What a great surprise it is! 这多么令人惊奇啊!
What a rich breakfast it is! 多么丰盛的一顿早餐啊!
【句型二】How + 形容词 / 副词 + 主语 + 谓语!
How well you look! 你气色真好!
How kind you are! 你心肠真好!
How beautifully you sing! 你唱得真好听!
Strawberries! How nice! 草莓! 多好呀!
How clever the boy is! 这个男孩多么聪明啊!
How fast he runs! 他跑得多么快啊!
【说明】how还可以修饰动词构成感叹句，但动词不提前。如：
How I want to be a doctor! 我多么想成为一名医生啊!
How she dances! 她跳得多好啊!
英语语法感叹句知识点：陈述句改为感叹句
感叹句通常有what, how引导，表示赞美、惊叹、喜 悦、等感情。what修饰名词，how 修饰形容词，副词或动词，感叹句结构主要有以下几种：
How +形容词+ a +名词+其他成分!
How+形容词或副词+其他成分!
What +名词+其他成分!
What +a+形容词+名词+其他成分!
What + 形容词+复数名词+其他成分!
What + 形容词+不可数名词+其他成分!
请看以下例子：
It’s an interesting film. 这是一部有趣的电影。
→ What an interesting film it is! 这是一部多有趣的电影啊!
It’s wonderful weather. 天气很好。
→ What wonderful weather! 天气真好!
He did the work carefully. 他做这工作很仔细。
→ How carefully he did the work! 他做这工作多仔细啊!
Time passed quickly. 时间过得很快。
→ How quickly time passed! 时间过得真快!
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