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1、强调句型巧分辨牛津高二下学期8册Unit4课本同步辅导，针对其中重点句型、重点词汇及重点语法举例详细解释及小练。1. 强调句常与定语从句、名词性从句等混合使用，要注意辨别。例如：It was in Beihai Park where they made a date for the first timethat the old couple told us their love story. (强调句与定语从句混合使用)It was at the very beginning that Mr. Smith made a decisionthat we should send for a doc
2、tor. (强调句与同位语从句混合使用)Was itwhat we saidor something that we did that made you cry so sadly? (强调句与主语从句混合使用)2. 强调句和一些主从复合句结构相似，区分的方法是：如果去掉句中的it is/wasthat/who后，剩余部分在句子结构和意义上仍是完整的，便是强调句，否则就是主从复合句。例如：It was in the eveningthat he got home yesterday. (强调句)It was eveningwhen he got home yesterday. (状语从句)It
3、was reportedthat he got home very late. (主语从句)It was twenty miles from our city to the villagewhere the accident happened. (定语从句)It is a questionthat needs careful consideration.(定语从句)3. 强调句与It + be + 时间 + 从句等易混句型的比较。 It +is/was +时间状语 +that-clause强调句型。例如：It was at ten oclock in the evening that he c
4、ame back. 他是晚上十点钟才回来的。提示：用还原法可验证，去掉it is /wasthat后at ten oclock in the evening he came back在句意和结构上都是完整的。 It + is/has been + 一段时间 +since-clause。例如：It is ten years since I came to this school. 我来到这所学校已经10年了。It was years since I had seen her. 我已经有很多年没有看见过她了。It has been ten years since they left here.自从
5、他们离开这儿已经10年了。提示：此句型表示“自从以来已多久了”，主句多用一般现在时或现在完成时，从句用一般过去时；如果表示过去的情况，主句用一般过去时，从句用过去完成时。 It + be + 时间点 +when-clause。例如:It was ten oclock in the evening when he came back. 当他回来的时候，已是晚上十点了。提示：此句型中，it 指时间，表示时间的词语前无介词(时间一般为具体时间)。主句中的谓语动词和从句中的谓语动词在时态上一般是一致的，若主句是一般将来时，when后面的从句用一般现在时代替一般将来时。 It + be + 一段时间 +
6、before-clause。例如：It will be several hours before he arrives here. 再过几小时他才到这儿。It wasnt long before he told us about the matter. 没过多久他就告诉了我们这件事。提示：此句型用来表示某个动作发生的时间的迟早。用肯定式时，意为“过多长时间才”。用否定式时，意为“没过多长时间就”。巩固练习：一、请说出下面句子是什么句型1. It is a fact that he is an honest man.2. Was it your brother that you met at M
7、cDonalds?3. It was at midnight that I got back home yesterday.4. It was the street that he took a photo of.5. How is it that you will go to visit her tomorrow?二、翻译下列句子1. 是我最先提出这个理论的。_2. 正是我被这所名校录取的消息使我们全家人兴奋。_3. 老师留给我们的是一个问题，而非一个笑话。_4. 直到我到了那儿我才开始知道有关那件事。_5. 是什么使得两个年轻人感到困惑？_6. 英语被接受为一种国际语言这个事实使得要学好它
8、成为必须。_Key: 一、1.主语从句2.强调句3.强调句4.定语从句5.强调句二、1. It was I who put forward the theory first. 2. It was the news that I was admitted into this famous university that excited my family. 3. It was a question, not a joke that the teacher left for us. 4. It was not until I got there that I began to know something about the matter. 5. What is it that confuses the two young men? 6. It is the fact that English is accepted as an international language that makes it a must to learn it well.