人教版八年級(jí)英語(yǔ)下冊(cè)《An old man tried to move the mountains》SectionA PPT教學(xué)課件(第3課時(shí))，共40頁(yè)。
Objective
To learn the usage of unless, as soon as and so … that.
To learn the Grammar Focus.
To learn new words: fit, couple, smile, marry…
Free talk
Try to make a conversation about the story Yu Gong Moves a Mountain with your partner.
How does the story Yu Gong Moves a Mountain begin?
Once upon a time, there was a very old man … the mountains were so high and big that it took a long time to walk to the other side… The old man decided to move the mountains…
What happened next?
One day, a man told Yu Gong that he could never do it because he was old and weak. As soon as the man finished talking, Yu Gong said that his family could continue to…
Where would they put all the earth and stone from the mountains?
Yu Gong said they could put them into the sea because it’s big enough to hold everything.
Grammar Focus
How does the story begin?
Once upon a time, there was a very old man ...
What happened next?
As soon as the man finished talking, Yu Gong said that his family would continue to move the mountains after he died.
Why was Yu Gong trying to move the mountains?
Because they were so big that it took a long time to walk to the other side.
Who is the Monkey King?
He is the main character in Journey to the West.
What can’t the Monkey King do?
He cannot turn himself into a man unless he can hide his tail.
unless 的用法
conditional clauses with if and unless
含有if的復(fù)合句由兩個(gè)分句組成；if 為連詞，引導(dǎo)條件狀語(yǔ)從句，另一句為主句。
如果談?wù)摰氖悄骋粋�(gè)動(dòng)作發(fā)生后勢(shì)必會(huì)產(chǎn)生某個(gè)結(jié)果，那么主從句都用一般現(xiàn)在時(shí)態(tài)。
as soon as 的用法
英語(yǔ)動(dòng)詞的時(shí)間大致可分為三段：過(guò)去時(shí)、現(xiàn)在時(shí)、將來(lái)時(shí)。假設(shè)有兩件事A和B，就會(huì)出現(xiàn)三種情況：
A 過(guò)去時(shí) as soon as B 過(guò)去時(shí)
A 現(xiàn)在時(shí) as soon as B 現(xiàn)在時(shí)
A 將來(lái)時(shí) as soon as B 將來(lái)時(shí)
在每一個(gè)大的時(shí)間段內(nèi)，A 和 B 的時(shí)態(tài)要統(tǒng)一。比如 A 過(guò)去時(shí)，B 肯定在過(guò)去時(shí)內(nèi)。其它也是如此。至于在每個(gè)大時(shí)間段內(nèi)，再根據(jù)A 和 B兩件事的具體情況，具體對(duì)待。比如：A 和B都是過(guò)去時(shí)，A 和 B 是同時(shí)發(fā)生，還是先后發(fā)生，不是即將發(fā)生，再分別選用完成時(shí)、進(jìn)行時(shí)、將來(lái)時(shí)。例如：
A 過(guò)去時(shí) B 過(guò)去時(shí)：
I arranged the flowers in the vase as soon as I came back home.
一回到家里，我就把花在花瓶里插好。
A 過(guò)去進(jìn)行時(shí) B 過(guò)去完成時(shí)(虛擬)
He was shaking with fright as if he had seen a ghost.
他嚇得直哆嗦，就好像看見(jiàn)了鬼一樣。
A 將來(lái)時(shí) B 將來(lái)時(shí)(可用一般現(xiàn)在時(shí)表達(dá))
They will post me the tickets/post the tickets to me as soon as they receive my cheque.
他們收到我的支票后就立刻把票寄給我。
as soon as連接的時(shí)間狀語(yǔ)從句中，指未發(fā)生的動(dòng)作。規(guī)律是：主句一般將來(lái)時(shí)，從句用一般現(xiàn)在時(shí)代替一般將來(lái)時(shí)。 如：
I will tell him the news as soon as he comes back.
緊接著發(fā)生的兩個(gè)短動(dòng)作，主從句都用一般過(guò)去時(shí)。
如：He took out his English books as soon as he sat down.
so…that… 的用法
so .... that.... 如此……以致于……
(that 引導(dǎo)的結(jié)果狀語(yǔ)從句)
so的后面跟副詞或形容詞，例：
老師說(shuō)的太快了，以至于我聽(tīng)不清楚他的話(huà)。
The teacher speaks so fast that I can’t catch the words.
［比較］so…that…與so that
So that:
（1）引導(dǎo)結(jié)果狀語(yǔ)從句，意為“因此，所以”，主句和從句間常用逗號(hào)分開(kāi)，一般不與情態(tài)動(dòng)詞連用。
Nothing more was heard of him, so that people thought that he was dead.
未再聽(tīng)到他的消息，以致人們認(rèn)為他已死去了。
（2）引導(dǎo)目的狀語(yǔ)從句，意為“為了，以便”，通常從句中用may，might，can，could等情態(tài)動(dòng)詞。
We left early so that we could catch the first bus.
我們很早出發(fā)，以便能趕上第一班汽車(chē)。
Homework
Use “unless”, “as soon as” and “so…that” to make as many sentences as possible.
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