sbiib unit 20 archaeology
考古的重大发现
素材新挖掘
考点1. spare adj. 备用的；额外的
it was all that a person would need to survive----clothing, tools, weapons, pottery and spare materials to make new tools.
i have no spare cash to lend you.
我没有多余的现款可以借给你。
spare vt. 节约, 吝惜
spare vt. 抽出, 剩下; 出让, 割爱
spare one’s life饶恕某人的生命
spare no efforts (pains)不遗余力
spare adj. 备用的；多余的，剩余的
in one’s spare time 在空余时间
(1)can you ________(割爱)me this book for a while?
(2)she never ________(吝惜)the butter when baking.
spare
spares
(3)the man begged the judge to ________(饶恕)his life.
(4)if you have a _______(备用的)bed, may i stay tonight?
(5)你能抽出五分钟和我谈谈吗？(写作小练笔：主谓宾；minute)
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考点2. tend vi. 倾向；趋势
archaeologists tend to believe that this man was a member of a powerful class that may well have organized the construction of stonehenge.
his novel tends to be very long.
他的小说总是写得很长。
tend vt. 走向；趋向；朝向
tend vt. 照顾
tend to do 有某种倾向；有……的趋势
(1)boys ________(往往)be taller than girls.
(2)people under stress _______(容易)to express their full range
of potential.
spare
spare
can you spare me five minutes?
tend to
tend
(3)he _________(往往)to throw the ball too high.
(4)he _________(照顾)the child day and night throughout his
illness.
(5)women tend to live longer than men.(英译汉)
______________________________
(6)最近,物价有上涨的趋势。
(写作小练笔：主谓+to do；price, go up)
_______________________________
考点3. average adj. 平均的；普通的
but the smaller blue stones, still weighing four tons on average, came from west wales.
on average, i spend 100 on books each month.
我平均每个月花在买书的钱有100元。
average adj. 平均的
on average 平均，一般的
average n. 平均数; 平均
average vt. 平均为
tends
tended
女性一般比男性长寿。
prices tend to go up recently.
(1)what is the ___________(平均)rainfall for august in your
country?
(2)people ___________(一般)incomes are finding it hard to
manage at the moment.
(3)the __________(平均)age of the boys is fifteen.
(4)we average 8 hours" work a day.(英译汉)
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