【重点、难点概览】
一、词汇与短语：
thousand, so far, send up, with one’ s help, man- made, enjoyable, develop.
二、句型与日常交际用语：
复习U15～U18单元的句型与日常交际用语。
三、语法：
复习U15～U18单元的语法
(1)宾语从句(2)被动语态
核心知识
1．When we talk about the universe, we mean the earth, the sun…
当我们谈宇宙时，我们指的是地球，太阳……
mean：v，指的是“意谓”。
e．g：What do you mean?你指的是什么?
2．so far：到目前为止；至今= by now/up to now.
So far we have learn 1000 words. 常用于现在完成时。
3．Man - made satellites have been sent up into space by many countries.
许多国家已向太空发射了人造卫星。
man-made合成形容词人造的。
(1)send up：发射。
e．g：China has sent up many man- made satellite. 中国已发射了许多人造卫星。
(2)send for：派人去请
e．g：He’ s ill．You’ d better send for a doctor at once.
他病了，你最好马上派人请个大夫。
(3) send away. 开除Tom was sent away because he was alway late for work.
汤姆被开除了，因为他总是迟到。
4．With their help China can send its TV and radio programmes…在他们的帮助下，中国可以……
with one’ s help = with the help of sb. 在某人的帮助下。
e．g：With the teacher’ s help, I’ ve made great progress. 在老师的帮助下，我取得了巨大进步。
或 With the help of the teacher．I’ ve made great progress.
它的反义词是with out one’ s help. 没有某人的帮助。
e．g：I can’ t finish the work in time without your help. 没有你的帮助，我不能按时完成工作。
5．She heard a very interesting programme on the radio.
她从收音机里听到一个非常有趣的节目。
on：表“通过”，还有“在……之上，关于，继续”等含义。There is a cup on the table. 桌上有个杯子。
e. g：I have a book on computer. 我有一本关于计算机的书。
We can learn English on the radio. 我们可以通过广播学英语。
Go on this street till you see the cinema. 沿街往前走直到你看见电影院。
【有关"Unit 19 Mainly revision" 的教学设计】
教学设计1. Mainly Revision
学习目标：
单元双基学习目标
Ⅰ. 词汇学习
thousand , satellite , universe , man - made , space , spaceship , programme = program, knowledge , develop, enjoyable , channel , so far , send up , with one' help
Ⅱ. 句型结构
How many kilometres by train is it from Nanjing to Wuhan ?
How far away is Sydney from Beijing ?
Satellites are used by people for sending and receiving messages .
Which channel is the programme on ?
Ⅲ . 语法学习
1. 一般现在时，一般过去时及含有情态动词的被动语态。
2. 简单构词法：合成法，派生法。
教案内容：
内容1：教学过程