第四单元导学案
一Translate the following words and phrases
1大气层—— 2 猛烈的—— 3 固体4 表面 5发展 6 出席 7 存在 8 伸展 9爆炸10阻止
二sentences structures
1 结合三维设计及报纸学习下列词及短语的用法。
⑴violent (n) _______ (adv) _______;patient (n)_____ (adv)____ puzzle (adj)______ ______ (vt)________
⑵ in time 及时；终于；迟早
有关的一些短语：总是 有时 按时 同时
⑶ depend on 用法归类：同义短语 看情况而定 同义词
试翻译：是否我们能上大学取决于我们努力学习。 当我们长大的时候我们要独立。
⑷ harm 的知识要求：ⅰ两个短语①———— ② ——————
ⅱ意义相似的四个词 ①—— ②—— ③—— ④—— ⑸ prevent…from…四个与from有关的同义句及keep的另一个句型 ⑹ in one’s turn的知识要求: 有关turn的两个句型
试翻译 ⅰ今天轮到他值日了；ⅱ我们轮流照顾那个老奶奶。
2 key sentences
⑴ What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust…
要求：ⅰ分析句型结构（主谓宾、主系表）；ⅱ 做三维设计48页与此句型有关的题目 ⑵The earth become so violent that it was not clear whether the shape would last or not.
ⅰ翻译并分析结构；ⅱ找出句中包含的两个句型。
ⅲ whether引导什么从句，it在句中作何成分,相似的结构有四类：
① It is +名词+that从句 It happened that… 碰巧
It is a fact… 事实是… It appears that… 似乎
It is an honor …非常荣幸 It seems that…似乎 ② It is +形容词+从句 ④ ④It+过去分词+that从It is natural that… 很自句 然 It is reported that… 据It is strange that… 奇怪报道 的是 It has been proved that… ③ It+不及物动词+that从已证实
句 It is said that… 据说
ⅳ 该句中whether可换成if吗？有何区别？ ⅴ it可做形式主语外还可做什么？(相似)
三Reading
1 Retell the development of life on the earth
2 Find out the words to describe the development of life.
四 .Further practice
1. ______ What you don’t like him is none of my business. A. What B. Who C. That D. Whether
2.______the 2008 Olympic games was held in Beijing is well-known. A. Whenever B. If C. Whether D. That
3.______ we will go camping tomorrow depends on the weather. A. If B. Whether C. That D. Where
4. _____ in the newspaper that the price of the food will go up. A. It says B. It is said C .It has said D. He is said
5.It is necessary that a college student ______at least a foreign language. A. masters B. should master C. mastered D. will master 6.______ We should do is to help Li Ming with his English. A. Which B. What C.That D. It
7.______ is known to us all _____ the old man still works hard in his eighties. A. It ;whom B. As ;what C. It ;that D. What; that