Step 4 Language points
1.First, it must be Very light, the lighter the better, because it has to be sent up into space by a rocket.
* the more, the more 越．．．．．．， 越．．．．．．
The sooner, the better.
The more, the better.
The higher it flies, the smaller it appears.
The harder you work, the greater progress you will make.
2.It has equipment for making electricity from sunshine, using very broad sun panels.
* make A from B 用A制成B
She made a dress from this material.
* be made from
* be made of
* be made into
* be made up of
The bridge was made of stones.
Mother made my trousers from an old pair of my father’s.
The school was made up of two parts.
Bamboo can be made into paper.
* using very broad sun panels
Westerners eat food, using dorks and knives.
Please make a sentence, using the phrase “either… or”.
3. Once the satellite goes into orbit round the earth, the panels are unfolded in order to catch the sunshine.
* once 一旦．．．就．．．．引导时间状语从句，相当于 as soon as. 但as soon as强调时间的紧跟性，而once则更加强调条件，含if 之意．
You will love the beautiful place once you get there.
Once you get into the habit of smoking, you won't be able to give it up easily.
Once you understand the rule, you will have no further difficulty.
A decision shouldn’t be changed once it is made.
* once adv. 一次
They came to see me once every two months.
I used to get a letter from my father once a week.
* once adv. 曾经一度，过去有一次．
The song was once very popular.
Once in the night I woke and heard the wind blowing.
* unfolded 展开―――folded 折叠
He opened the envelope and unfolded the letter.
He folded the letter and put it in an envelope.
Cover – uncover, dress – undress, lock – unlock, pack – unpack, tie – untie, able – unable.
4. It is therefore possible to say not only what the weather is like at present, but also what is likely to happen in the next day or two.
* be likely to do sth. 很可能的
A store is likely to come tonight.
It is likely to be fine tomorrow.
That \is not likely to happen.
* likely/ probable/possible/maybe/perhaps
likely和probable意思相同,意为 “很有可能”,但前者常用于口语. Possible意为 “有可能”,因此likely和probable的可能性比possible大, 语气比possible强.
It’s possible but not probable/ likely that she will come here next month. 她有可能下月来这里, 但不肯定.
6.Ships and plans can be warned so that they can keep out of the path of the hurrican.
* keep out of : stay away from something bad. 不牵涉进去,不要惹事,避开
I warned Bill to keep out of trouble while I ‘m away.
You should keep out of these things.
Children have been warned to keep pout of fields while the crops are growing.
7.Connect
* join or to be joined 连接;衔接;接通;联想;联系
The two towns are connected by a railway.
The 9:00 a.m. train from London connects with the 12:05 p.m train at Crewe.
Connect me with Chic

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