上海沪教版高一英语下册unit 3 Plants 知识点

教师董艳节学生上课时间学科英语年级高一课题名称Unit 3 知识点Reading & More教学目标重点难点一、Plants can be much more interesting than you think. 植物有时会比你想象的有趣多了。

(1)can 在否定句和疑问句中常表示可能性，但在肯定句中当can和be动词连用时，也可表示可能性，通常译为“有时会……”e.g. They can’t have had a good time for the weather was too bad.Swimming can be dangerous.★★☆（2）much 此处用来修饰比较级more interesting，可以修饰比较级的词还有：even, many, a bit, a little, a little bit, (by) far, still等等。

e.g. There are many more students in our school.This piece of composition is far better.二、find out 找出，查明（强调通过努力，调查，研究，询问，观察等方式“弄清楚、查明”某事）e.g. Will you please find out what time the next train leaves?They found out the solution with great effort many years later.★★【知识拓展】find out, find, look forfind 译为“找到”，强调结果；look for 译为“寻找”，强调过程；e.g. The police have been looking for the missing girl without a break for a week, but they still didn’t find her.三、Water lilies can often be seen in China, with their round leaves, or pads, floating in ponds.在中国经常可以看到睡莲，它们圆圆的浮叶漂浮在池塘的水面上。

★★☆【解析】句中with their round leaves, or pads, floating in ponds是介词短语，作主语water lilies的定语。

with 短语作定语时，常译为“长着，有着”等意。

e.g. China is a country with a long history and rich culture.His sister, Helen, is a lovely girl with big bright eyes.四、In Hangzhou, there is a kind of water lily whose pads are so huge that a person can stand on them.在杭州有一种睡莲，它的浮叶大到上面可以站一个人。

【解析】（1）whose是关系代词，相当于water lily’s, 在句中引导一个定语从句。

e.g. This prize will be awarded to the person whose contributions are considered the most important to this project.这个奖项将被授予对这个项目做出最重要贡献的人。

When I was walking in the street, I saw a girl whose beauty took my breath away.我在街上散步时，看见一个女孩子，她的美丽让我窒息/屏息神住。

（2）so ...... that ......译为“如此……以至……”，引导一个结果状语从句。

e.g. The child is so sick that he has to stay in the hospital for the further treatment.孩子病得很重，不得不住院作进一步的治疗。

★★★★★【知识拓展】so + adj/adv + that such + a/an + adj + n. (单) + thatso + adj + a/an + n.(单) + that such + adj. + n. (复) + thatso + many/few + n.(复) + that such + adj. + n. (不可数) + thatso + much/little + n.(不可数) + thatIt is so interesting a book that I want to read it again. 这本书如此的有趣，以至于我还想再读一篇。

There is so little time left that I have to leave at once. 剩下的时间不多了，我得马上离开。

Tom was such an honest boy that he was praised by the teacher. 汤姆非常诚实，因而受到老师表扬。

There were such a lot of people in the street that we could hardly move on. 街上人太多，我们简直无法往前走。

五、Its pads are more than two metres wide and its white or purple flowers can grow as large as 45 centimetres across. （1）表示长、宽、高、深、重等作表语的两种表达方法。

e.g. The swimming pool is 30 metres long, 10 metres wide and 1.6 metres deep.= The swimming pool is 30 metres in length, 10 metres in width and 1.6 metres in depth.（2）as large as ... 译为“大到多少”【类似补充】as far as ... 远达多少as long as ... 长达多少as small as ... 小到多少e.g. They have gone as far as 70 kilometres in search of fruit.Plants can be as small as one cell.六、such 这样的，这种的；此类的，如此的such 常用来表示惊叹或加强语气，使用时应注意：(1)such 无比较级与最高级；(2)和不定冠词a/an连用时，such放在该冠词之前；(3)与all, no, one, few, several, some, any等词连用时，such放在该类词之后。

e.g. All such men will be dismissed soon.No such thing have I ever expected to happen.七、It has a long white root, in which there are many holes.【解析】in which 在句中引导一个非限定性定语从句，补充说明先行词root的情况。

e.g. He gave me a bookmark, on which his name was signed.In the past, the kingdom was divided into serval parts, among which his hometown was the most important and powerful.八、serve v.（1）（to give food or drink to sb）提供e.g. What time is breakfast served in this restaurant?We are well served with gas in this town.（2）服务，对待e.g. She has served the family faithfully for thirty years.（3）（与in连用）任职；服役e.g. He served in the navy.（4）可做；适于e.g. This box will serve for a seat.This platform would serve as a port.（5）开饭；上菜serve sb with sthe.g. If you want to be served in this restaurant, you have to line.九、In the west,eating lotus or seeds is not as popular as it is in Asia.【解析】形容词、副词的同级比较在肯定句中用as + adj./adv. + as ......，意为“和……一样……”，在疑问句中否定句中用（not）as/so + adj./adv. + as ......，意为“不如……那样……”e.g. Simon doesn’t swim so/as well as Dick, but he runs as fast as Dick.十、eventually, at last, finally, in the end（1）eventually 侧重于动作或行为的结果。

e.g. It was a long journey, but we eventually arrived.Jane has got a good job now, so she will pay you back eventually.（2）at last 多指经主观努力，克服各种困难后才最终达到目的，语气强烈，有感情色彩，不用于将来时。

E.g. When at last the rescue team found him, he was almost dead.Here comes the bus at last.（3）finally可与at last 互换，都用于对往事的描述，但不带感情色彩，指一系列事情的最后结局。

e.g. The problem has not finally settled yet.（4）in the end与at last同义，但in the end可用于对未来的预计。