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词汇解析
1. kangaroo→复数:kangaroos , bamboo→复数:bamboos
以o结尾的可数名词变为复数时,通常遵循以下三种规则:
⑴以“元音字母+o”结尾的名词加-s, 如:kangaroo→kangaroos , bamboo→bamboos,
zoo→zoos, radio→radios, cuckoo→cuckoos(杜鹃,布谷鸟), rodeo→rodeos(牛仔竞技比赛)
⑵以“辅音字母+o”结尾的名词加-es, 如: hero→heroes, potato→potatoes, tomato→tomatoes, Negro→Negroes(黑人), echo→echoes(回声)
⑶有些“外来词”虽以“辅音字母+o”结尾,但只加-s,如:tobacco→tobaccos(烟草), photo→photos, piano→pianos, solo→solos(独唱,独奏;单人表演)
2. 本单元动物名词:zebra, lion, bear, polar bear, tortoise (turtle海龟), giraffe, fox, camel, monkey, wolf, dolphin, giant panda, squirrel, tiger, snake, snail, insect, dragonfly蜻蜓
3. female女性的;雌性的 male男性的;雄性的 e.g. —What’s your sex? —Male/female.
重点句型
1. Sadly, it is very difficult for giant pandas to survive in the wild. → survive=continue to live
〈知识链接〉sadly置于句首时表示对某件事情感到惋惜、难过。类似的有luckily, unluckily, hopefully。
It is+形容词+for sb to do sth. It是形式主语,而动词不定式是真正主语。
It is necessary for Oxform Trailwalkers to support each other during the charity walk.
2. If a bear is in danger, it will attack people. 如果熊处于危险中,它就袭击人。
3. Tigers will live as a family if they have babies.如果老虎生了虎崽,就生活在一个家庭里。
4. Tigers will live as a family until baby tigers are 2-3 years old.
⑴She slept till/until nine.=She stopped sleeping at nine.她一直睡到九点钟。
⑵She didn’t go to sleep till/until nine.=She started sleeping at nine.她九点钟才开始睡觉。
till/until直到…时为止,not…until…直到…才…,till/until后接短语或从句。
till/until用在肯定句中时通常表示动作的终点,用在否定句中时则表示动作的起点。
They talked until dawn.
They did not return home until 10:00.
③I didn’t know it until you told me. His uncle didn’t get married until he was 35.
④—Was his father very strict with him?
—Yes. He had never praised him until he became one of the top students in his grade.
They the train until it disappeared in the distance.
A. saw B. watched C. noticed D. looked at
〈知识链接〉当until从句与肯定的主句连用时,主句的谓语动词必须是延续性动词;与否定的主句连用时,主句的谓语动词必须是非延续性动词。Don’t get off until it has stopped.
5. They looked lovely on me.=I looked lovely in them. 注意介词on/in的使用 (p69)
〈知识链接〉Sth look lovely on sb.=Sb look lovely in sth.某物穿/戴在某人身上很漂亮。
6. If no one buys furs, then people won’t kill wild animals any more.
〈知识链接〉furs毛皮制品(可数名词),fur毛皮(不可数名词),如:animal fur兽皮
7. The number is getting smaller and smaller because many of their living areas are becoming farmland.
因为它们的许多生存地逐渐变成农田,它们的数量变得越来越少。 (p71)
〈知识链接〉the number of+名词复数,“…的数量/数目”,the number是中心词,而of短语是对它的限制,因此其谓语动词必须用单数。当表示“多”、“少”时用large/big和small。a number of+名词复数,表示“许多、若干”=many, a lot of。a number of并不是中心词,而是不定数量词,如同a lot of, lots of, many, some。因此,a number of+名词复数作主语时,其谓语动词用复数。
①The number of people invited was 60, but a number of them were absent for different reasons.
②There were a large number of people in the hall.
③A number of people have applied for the job.
④Chinese is spoken by the largest number of people in the world. 世界上说汉语的人最多。
⑤The number of the students in our class is 70.=There are 70 students in our class.
⑥The number of Chinese is much larger than that of Great Britain.
8. If I arrive at noon, I will see the feeding of animals. (p65)
〈知识链接〉at noon=at twelve o’clock在正午,in the middle of the day在中午
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