人教版高中英語必修三《Space Exploration》SectionC PPT教學課件，共44頁。

互動探究

重點詞匯

1Astronauts’ bones and muscles can get very weak in space due to the lack of gravity,so they need to exercise every day,which will help them stay healthy.(教材P42)在太空中,宇航員的骨骼和肌肉會由于缺乏重力而變得非常脆弱,所以他們每天都需要鍛煉,這會幫助他們保持身體健康。

lack n.缺乏;短缺　vt.沒有;缺乏

I’m not worried about her lack of experience—we can easily train her.

我一點也不擔心她缺少經驗,我們可以很容易地培訓她。

The reason why he failed in the driving test was that he lacked confidence in himself.

他駕照考試失敗的原因是對他自己缺乏信心。

2Astronauts have to use tape to stick everything down while working in space because everything would float off otherwise.(教材P42)宇航員在太空工作時必須用膠帶把所有的東西都粘住,不然的話一切都會飄走。

otherwise adv.否則;要不然

I’m lucky that I’m interested in school work,otherwise I’d go crazy.

幸好我對學校作業感興趣,不然會瘋的。

I will try my best to do it.I would not make a promise otherwise.

我會盡全力去做的,否則我就不會作出承諾。

It was necessary to discover the truth or otherwise of these statements.

有必要查證這些說法的真實性或虛假性。

The bike needs a new saddle,but otherwise it’s in good condition.

這輛自行車需要一個新車座,除此以外它完好無損。

Don’t start giving me problems otherwise I’ll have to be very unpleasant indeed.

不要開始給我找麻煩,否則我就不客氣了。

Bob helped me.Otherwise,I wouldn’t have finished the task on time.

鮑勃幫助了我。否則我不可能按時完成任務的。

重點句式

...it would take over two years to get to the closest planet,Mars,and back.(教材P42)

……到達最近的行星——火星,并返回,需要超過兩年的時間。

【句式剖析】It takes/took sb some time to do sth意為“做某事花費某人……時間”。

It takes a long time to get from London to Sydney.

從倫敦到悉尼要花很長時間。

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