2021高考英語備考單元知識搜索與探究歸納 Unit8 First aid
i’ve made up my mind to be a doctor.
我下定了決心要當(dāng)醫(yī)生。
have you made up your mind where to go for your holiday?
你拿定主意到哪里去度假了嗎？
必背句型
要點1 unless
【例題】_______ you call me and say you’re not coming, i’ll see you at the theatre.
a. though b. whether
c. until d. unless
解析:用unless，表示條件，符合句意“我將在劇院等你，除非你打電話說你不來了”。
答案:d
歸納與遷移
unless=if not,引導(dǎo)條件狀語，表示“如果不……就……；除非……”。
my baby sister never cries unless she is hungry.
我剛出生的妹妹除非餓了，她是從來不哭的。
i shall go there tomorrow unless i’m too busy.
如果我不太忙，明天將到那兒去。
unless you go at once you will be late.
如果你不馬上走，就會遲到的。
特別提示：
unless不可用以指尚未發(fā)生的事情的結(jié)果，因此不可用于“假想的”條件句中。
i’ll be sorry if she doesn’t come. (正確）
如果她不來我會難過的。
i’ll be sorry unless she comes. (錯誤）
要點2 make sure
【例題】 mary thought she had time to get to school, but she ran all the way just_______ .
a. to make sure of b. to make sure
c. to make sure to d. to make sure that
解析:make sure of/that要跟賓語，to make sure為了確保。
答案:b
歸納與遷移
make sure (that/of)
(1）弄清楚，核實，查明
—did you lock the front door?
你把前門鎖上了么？
—i think so, but i’d better make sure.
我想應(yīng)該鎖上了。但是最好還是檢查一下。
emma peered into the room to make sure that ruth was asleep.
艾瑪向房里張望看看魯思是不是睡了。
(2）確保某事發(fā)生
i make sure that the rope was firmly fastened around his waist.
我確保繩子牢牢地系在了他的腰上了。
make sure he writes it down.
讓他一定記下來。