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拓展：if only要是……该多好，但愿。if only从句可单独使用，这时要用虚拟语气：表示与过去相反的愿望用 had done；与现在相反的愿望用 did/were；表示与将来相反的愿望用 “would/could/might＋动词原形”。
①If only I had gone to Beijing.
我要是去了北京就好了。
②If only he could come tomorrow.
他要是明天能来就好了。
[即境活用2] ______both sides accept the agreement will a lasting peace be established in this region.
A．Only if B．Unless
C．If only D．As long as
答案：A
解析：主句中用了“will＋主语＋be”倒装结构，故选 Only if。
易 错 点 拨 自我完善•误区备考
1. defeat/beat/win
这三个词都有“赢”的意思，但其用法不尽相同。
(1)defeat和beat是同义词，其宾语必须是“人或一个集体”。如a team, a class, a school, an army等。defeat侧重在战场上打败敌人，beat常用于游戏或比赛中，但在平时运用中常替换使用。
(2)win表示在较强的竞争中取得了胜利，常带的宾语有：game, war, prize, fame, battle等。win还可作为不及物动词来用。
[应用1] 用defeat, beat, win填空
(1)He ____________ all his opponents in the election.
(2)Peasants ______ the drought and reaped a good harvest.
(3)After a hearttoheart talk, I ______ his belief at last.
defeated/beat
beat
won
(4)The enemy’s plot was _________ very soon.
(5)We wouldn’t have ______without your help.
(6)Mary ______ first prize for swimming.
defeated
won
won
2. cure/treat/heal
(1)treat指通过药物、特别的食品或运动治病，强调治疗过程，treat sb. for sth.医治某人……病；还可作“对待，看待”讲，treat...as把……看作/视为。
(2)cure意为“治愈，痊愈”，特别指病后的恢复健康。其后可接表示疾病的名词或代词，也可接sb. of再加表示疾病的名词。另外，还可作“矫正，纠正”解，借喻指消除社会上某种不良现象或个人恶习等。
(3)heal意为“治愈”，多用于治愈外伤，如：wound, cut, injury, burn等。
[应用2] (1)He _________ his students as his own children.他把学生看作自己的孩子。
(2)The doctors are trying to ______ him with a new drug.
医生们尝试用一种新药为他治病。
(3)His wound is _________ over.
他的伤口正在愈合。
(4)The medicine will ______ you of your cough.
这药能治好你的咳嗽。
(5)When I left hospital I was completely ______.
出院时我已完全康复了。
treated
treat
healing
cure
cured
3. announce/declare
(1)announce宣布；宣告(含有“预告”的意思)，尤其是大家所关心的或有新闻价值的事情的宣布。用announce说个人要做某事，常常含有“郑重其事”的意思。
(2)declare宣布(如公开声明战争、和平、中立、意见等)，用于正式场合。
[应用3] (1)This powerful country _________ war on that small country.
这个大国向那个小国宣战。
(2)It was ___________ that there would be a celebration on Sunday.据宣布，星期日要举行庆祝(活动)。
declared
announced
4. apart from/in addition(to)/as well as/except/except for/except that/besides
apart from 除……之外(既可以表示 except或 except for，也可以表示 besides)
in addition 也；另外；此外；还(相当于副词 besides)
in addition to 除……以外还(相当于介词 besides)
as well as 还；既……又……；也(相当于介词 besides)
except (＝but) 除……之外(不包括在内)
except for 除……之外(强调有美中不足)
except that (what/when/where) 除了……
besides 除……之外 (包括在内)；况且；此外
[应用4] 用上述词或词组填空
(1)I like her ____________ she is angry.
(2)I have read a lot of novels _____________________________________some short stories.
(3)Your composition is very good _____________________ some spelling mistakes.
(4)___________________， we have a research－oriented program.
(5)They all went to sleep ____________________ the little boy.
except when
in addition to/besides/as well as/apart from
apart from/except for
In addition/Besides
apart from/except
高 效 作 业 自我测评•技能备考
Ⅰ.单词拼写
1．A nurse _____________(照料) to his needs constantly.
2．Mr Smith is a __________(内科医师) in the hospital.
3．A scientific theory is the result of the _________ (科学的) method.
4．She doesn't want to _________ (暴露) herself to the public, because she is a shy girl.
5．Destruction of the environment is one of the most serious _____________(挑战) we face.
attended
physician
scientific
expose
challenges
6．He drew a c_____________ after a lot of experiments.
7．Who is to b___________ for starting the fire?
8．A____________ from your spelling, your composition is rather good.
9．Have they a_____________ when the plane will take off?
10．You must be c_____________________ when crossing the street.
