1、Section Section Discovering Discovering Useful StructuresUseful Structures ( (主语从句主语从句) ) 第一篇第一篇 教材过关教材过关 单句语法填空 (1)(教材P50)However, concerned him most was farm- ers often had poor harvests and sometimes even had a serious shortage of food to eat. (2)(教材P50) this could be done was a challenging quest
2、ion at the time. 情境创设情境创设语法精讲语法精讲 教材链接 whatthat How (3)(教材P50)However, it was possible to develop a hybrid of self- pollinating plants such as rice was a matter of great debate. (4)(教材P50)Today, is estimated about 60 percent of domestic rice consumption in China is comprised of crops generated from
3、Yuans hybrid strains, and his strains have allowed Chinas farmers to produce around 200 million tons of rice per year. (5)(教材P51) impresses people most about Yuan Longping is his on- going ability to fulfil his dreams. whether itthat What 1.概念 在主从复合句中充当主语成分的从句叫作主语从句。 2.引导主语从句的连接词 (1)从属连词:that、whethe
4、r。 (2)连接代词:who、whoever、whom、whose、what、whatever、which、 whichever。 (3)连接副词:when、where、how、why、whenever、wherever、however。 要点精析 3.常规主语从句,即从句在主从复合句中充当主语成分 (1)连接词位于句首不能省略 That he finished writing the composition in such a short time surprised us all. 他在如此短的时间内写完作文使我们十分惊讶。 What caused the accident remains
5、 unknown. 事故的起因仍然是未知的。 (2)主语从句大多数情况下被视为第三人称单数 Whether we will go on an outing tomorrow remains unknown. 我们明天是否会外出仍然未知。 Who will be our monitor hasnt been decided yet. 还没有决定谁会成为我们的班长。 4.it放在句首作形式主语,真正主语则置于句末 It is certain that he will win the match. 他一定会赢得这场比赛的。 It is true that he has made an importa
6、nt discovery in chemistry. 他确实在化学上做出了一项重大的发现。 It is very likely that they will hold a meeting. 他们很有可能会举行一场会议。 It is strange that he should do that. 很奇怪他竟然做那件事。 It is important that we all should attend the meeting. 重要的是我们都应该参加会议。 5.that从句作主语时,常用it作形式主语,常见的句型有: (1)It+be+形容词(obvious, true, natural, su
7、rprising, good, wonderful, funny, pos- sible, likely, certain, probable, etc.)+that从句。 (2)It+be+名词词组(no wonder, an honor, a good thing, a pity, no surprise, etc.)+ that从句。 (3)It+be+过去分词(said, reported, thought, expected, decided, announced, ar- ranged, etc.)+that从句。 .单句填空 1. is strange that the man
8、should have stuck to his silly ideas. 2.It is a pity we wont be able to go to the south to spend our summer vacation. 3. caused the accident is still a mystery. 4. is said that he has gone to Shanghai.(=He is said to have gone to Shanghai.) 素养达标素养达标迁移创新迁移创新 It that What It 5.It is known to all gunpo
9、wder was first invented by the Chinese. .用主语从句翻译句子 1.你做的任何事都是正确的。 Whatever you did was right. 2.手表属于谁是未知的。 Whom the watch belongs to is unknown. 3.我们需要的是时间。 What we need is time. that 4.我们需要的是好的医生。 What we need are good doctors. 5.我们为谁而学习是个很重要的问题。 Whom we study for is an important question. .语法与主题写作
10、 1.写作要点 根据本单元所学语法知识和主题知识补全句子。 (为了) learn something about organic farming and In order to experience the joy of picking vegetables, we are going to hold an Organic Veg- etable Picking activity this Sunday morning on Xixing Farm. There will be a guided tour of the farm (show) us how to plant organ- ic
11、 vegetables. We will pick cucumbers, tomatoes and eggplants by (us). (据估计) the most exciting part is that we will cook the vegetables we pick in the kitchen offered by the farm. We have every reason (believe) this will be an unforgettable expe- rience, so come and join us! to show ourselves It is es
12、timated that to believe 2.串句成文 将以上句子连成一篇语言流畅、用词准确、逻辑严密的短文。 In order to learn something about organic farming and experience the joy of picking vegetables, we are going to hold an Organic Vegetable Picking activity this Sunday morning on Xixing Farm. First of all, there will be a guided tour of the f
13、arm to show us how to plant organic vegetables. Then we will pick cucumbers, tomatoes and eggplants by ourselves. It is estimated that the most exciting part is that we will cook the vegetables we pick in the kitchen offered by the farm. We have every reason to believe this will be an unforgettable experience, so come and join us! Everybody is welcome!
