【重點、難點概覽】
一、詞匯與短語：
thousand, so far, send up, with one’ s help, man- made, enjoyable, develop.
二、句型與日常交際用語：
復習U15～U18單元的句型與日常交際用語。
三、語法：
復習U15～U18單元的語法
(1)賓語從句(2)被動語態
核心知識
1．When we talk about the universe, we mean the earth, the sun…
當我們談宇宙時，我們指的是地球，太陽……
mean：v，指的是“意謂”。
e．g：What do you mean?你指的是什么?
2．so far：到目前為止；至今= by now/up to now.
So far we have learn 1000 words. 常用于現在完成時。
3．Man - made satellites have been sent up into space by many countries.
許多國家已向太空發射了人造衛星。
man-made合成形容詞人造的。
(1)send up：發射。
e．g：China has sent up many man- made satellite. 中國已發射了許多人造衛星。
(2)send for：派人去請
e．g：He’ s ill．You’ d better send for a doctor at once.
他病了，你最好馬上派人請個大夫。
(3) send away. 開除Tom was sent away because he was alway late for work.
湯姆被開除了，因為他總是遲到。
4．With their help China can send its TV and radio programmes…在他們的幫助下，中國可以……
with one’ s help = with the help of sb. 在某人的幫助下。
e．g：With the teacher’ s help, I’ ve made great progress. 在老師的幫助下，我取得了巨大進步。
或 With the help of the teacher．I’ ve made great progress.
它的反義詞是with out one’ s help. 沒有某人的幫助。
e．g：I can’ t finish the work in time without your help. 沒有你的幫助，我不能按時完成工作。
5．She heard a very interesting programme on the radio.
她從收音機里聽到一個非常有趣的節目。
on：表“通過”，還有“在……之上，關于，繼續”等含義。There is a cup on the table. 桌上有個杯子。
e. g：I have a book on computer. 我有一本關于計算機的書。
We can learn English on the radio. 我們可以通過廣播學英語。
Go on this street till you see the cinema. 沿街往前走直到你看見電影院。
【有關"Unit 19 Mainly revision" 的教學設計】
教學設計1. Mainly Revision
學習目標：
單元雙基學習目標
Ⅰ. 詞匯學習
thousand , satellite , universe , man - made , space , spaceship , programme = program, knowledge , develop, enjoyable , channel , so far , send up , with one' help
Ⅱ. 句型結構
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 . 語法學習
1. 一般現在時，一般過去時及含有情態動詞的被動語態。
2. 簡單構詞法：合成法，派生法。
教案內容：
內容1：教學過程