概要：既然我们年轻，我们应当多为国家做事。— Why is Kate absent? 凯特为什么迟到了？— Because she is ill. 因为她病了。since的另外一种用法，是表示“自从……以来”。Where have you been since I last saw you?上次我和你见面以后，你到哪里去了？It is a week since we arrived here.我们到这里来已经有一个礼拜了。（2）本句中cover的用法，意思是“用……遮盖；覆盖”。Snow covered the ground.雪覆盖了地面。She cried and covered her face with her hands.她哭了，用手蒙住了脸。The desk was covered with dust.= Dust covered the desk.书桌上布满了灰尘。7． …, he encouraged everyone to take part in protecting our lakes, rivers, seas and oceans.……，他鼓励每个
英语教案－上学期 Unit 6 Mainly revision,标签：九年级英语教案大全,http://www.88haoxue.com— Why is Kate absent? 凯特为什么迟到了？
— Because she is ill. 因为她病了。
since的另外一种用法，是表示“自从……以来”。
Where have you been since I last saw you?
上次我和你见面以后，你到哪里去了？
It is a week since we arrived here.
我们到这里来已经有一个礼拜了。
（2）本句中cover的用法，意思是“用……遮盖；覆盖”。
Snow covered the ground.
雪覆盖了地面。
She cried and covered her face with her hands.
她哭了，用手蒙住了脸。
The desk was covered with dust.= Dust covered the desk.
书桌上布满了灰尘。
7． …, he encouraged everyone to take part in protecting our lakes, rivers, seas and oceans.
……，他鼓励每个人加入到保护我们的河流、湖泊和海洋的行动中来，take part in意为“参加（活动）”一般表示在活动中还承担一定的职责。
He always takes an active part in all kinds of activities in school.他总是积极参加学校的各种活动。
join也有参加的意思，但是该词主要强调参加某项组织。如：He joined the party when he was eighteen years old.他十八岁就入了党。
8.— … but I’ve gone scuba diving.
— So have I.
— ……但是我去潜水了。
— 我也去了。
“So＋be/情态动词/助动词＋主语”这种简略结构表示“某人也……”如：I like green very much. So does Lily.
我喜欢绿色，莉莉也喜欢。
Tom can swim, so can I.
汤姆会游泳，我也会游。
She is a student. So are they.
她是学生，他们也是。
I went to the zoo yesterday. So did Mary.
昨天我去了动物园，玛丽也去了。
so＋主语＋be/情态动词/助动词，这种结构强调“……确实如此”。如：Her husband is English. So he is.
他丈夫是英国人。是的，他是。
Tom studies very hard. So he does.
汤姆学习很努力。是的，他确实很努力。
She passed the exam. So she did.
她通过了这次考试。是的，他确实通过了。
9. I’ve been down as long as two hours.
我在水下待了两小时之久
as long as …长达……
It took us as long as four hours to get over the mountain.
我们花了四个小时才翻过了那座山。
Mr. Brown spent as long as two and a half years writing the novel.
布朗先生花了长达两年半的时间才写完这部小说
注：类似的用法还有as much as, as large/big as, as wide as, as high as等等。如：
Look at the tower, it is as high as sixty metres.
看那座塔，它高达60米。
I spent as much as ten thousand yuan on the piano.
买这架钢琴，我花了多达一万块钱。
注意：as long as这个短语还可以做从属连词用来引导条件状语从句。意思是“只要……”，也可以说；so long as。如：
As long as I live, I’ll study.
只要我还活着，我就要学习。
You may borrow the bo
《英语教案－上学期 Unit 6 Mainly revision(第2页)》出自：www.88haoxue.com网只要你能保持书的清洁，你就可以借书。
As long as we don’t lose heart, we’ll find a way to overcome the difficulty.
只要我们不灰心，我们就能找到解决问题的出路。
10. Maybe we can go scuba diving sometime.
也许改天我们能潜泳。
Maybe it will rain tonight.
可能今天晚上会下雨。
Maybe it is true.
也许这是真的。
It may be wrong.
这可能有错。
Don’t worry. We have some time left.
别担心，我们还有时间。
I have been to his school some times.
我去过他的学校几次。
Come and see me sometime next week.
下个礼拜什么时候有时间来看我。
I sometimes go to the cinema after work.
我有时下班后去看电影。
11. Not all sharks are alike.
并不是所有的都相似。
Alive adj. 意思为“相同的；相像的”常做表语。
They were born on the same day. The two brothers are very much alike.
他俩出生于同一天。这兄弟俩长得很像。= They were born on the same day. The two brothers are very like.
他俩出生于同一天。这兄弟俩长得很像。
注意：like 之前可以用very 来修饰，但是alike之前则不行。另外，alike也可以用做副词。如：
You and I think alike.
你和我的想法一致。
Great minds think alike.
英雄所见略同。
12. … but many sharks feed on fish, other sea animals, smaller sharks and sometimes people.
……许多鲨鱼以鱼和其他的海洋动物，较小的鲨鱼为食，有时还以人为食。
Feed on sth. 以……为食
Cows feed on hay.
奶牛吃干草。
The children always feed on the best of food.
孩子们常常吃最好的食物。
13. It is said that one of the most dangerous sharks is the great white shark.
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