2017屆高考英語Unit 21單元精練復習教案
a.in place b.in sight
c.in effect d.in vain
【答案與解析】 d 考查介詞短語。in place“在合適的地方”;in sight“在視野內;被看到”;in effect“有效”;in vain“徒勞”。
2.at random 隨便地;任意地;胡亂地
guess at random瞎猜
open a book at random隨便翻開一本書
read at random無目的地瀏覽
1)the librarian took a book ________ ________ from the shelf.圖書管理員從書架上隨便拿了一本書。
2)the killer appears to have selected his victims ________ ________.兇手似乎是隨意選擇被害人。
3)please don't spit ________ ________.請不要隨地吐痰。
【答案】 1)at random 2)at random 3)at random
(1)單項填空
i began to feel ________ in the new school when i saw some familiar faces.
a.at home b.at heart
c.at will d.at sight
【答案與解析】 a 題意:在新學校里,當我看到一些熟悉的面孔時,我開始感覺自在。at home“在家;無拘束”; at heart“內心里;實際上”; at will“隨意地”; at sight“一見到……就”。
(2)名校押題
(浙江溫州八校聯考)not all athletes must be tested, but ________.
a.at all b.at least
c.at random d.at large
【答案與解析】 c 題意:并非所有的運動員都要藥檢,只是隨機抽查。at all“完全;根本”; at least“至少”; at random“隨便地;任意地”; at large“整個;全部”。
3.at all costs 不惜任何代價;無論如何
同義短語:at any cost
at the cost of 以犧牲……為代價
at cost 照原價;照成本價
1)we will save his life ________ ________ ________.我們將不惜任何代價挽救他的生命。
2)the bridge must be repaired within three days ________ ________ ________.要不惜一切代價在三天內把橋修好。
【答案】 1)at all costs 2)at all costs
(1)完成句子
the fire was put out ________ ________ ________ ________a fireman's life. 這場火災是以犧牲一位消防隊員的生命為代價才撲滅的。
【答案】 at the cost of
(2)名校押題
(天津市南開中學模擬) his uncle is a car dealer and sold him the car________.
a.at all costs b.at a cost
c.at the cost d.at cost
【答案與解析】 d 題意:他的叔叔是個汽車銷售商,因此按原價賣給了他這輛車。at all costs = at any cost“不惜任何代價;無論如何”; at a cost (of)“以……價格”; at the cost of“以犧牲……為代價”; at cost “照原價;照成本價”。