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3．whether ...or ...表示“不论是否；不管是…… 还是……”之意。
I have decided to take the job offer, whether it is good or bad.
无论好坏，我已经决定接受这份工作邀请。
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it is. ⑧Although/Though she works very hard, yet (still) she makes
very slow progress.
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[我的发现] (1)①②③句中，黑体部分引导 条件状语从句 ；④⑤⑥⑦⑧句中， 黑体部分引导 让步状语从句 。
(2) 由 ③ 句 可 知 ， 在 条 件 状 语 从 句 中 ， 主 句 用 将 来 时 ， 从 句 用 _一__般__现__在__时___代替一般将来时。 (3)⑧句中 although/though 引导让步状语从句不与 but 连用， 但可以与 yet 或 still 连用。 (4)由⑤句可知，as 引导让步状语从句且置于句首时，从句用_倒__装__ 语序。 (5)⑥⑦句中，however 和 no matter how 都引导 让步状语从句 ， 两者可以换用。
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(2)同义句转换 ①If you work harder, you will succeed in your studies. ＝Work harder and you will succeed in your studies. ②If you don't be careful, you will fall into the water. ＝Be careful, or/or else/otherwise you will fall into the water.
4．“no matter＋疑问词”或“疑问词-ever”的含义为“不 管……都……”，它们引导的让步状语从句可以互换。
However/No matter how hard you try, it is difficult to lose weight without cutting down the amount you eat.
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[即时演练 1]
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(1)完成句子
①(2015·北 京 高 考 改 编 )You won't find paper cutting difficult
_a_s_l_o_n_g_a_s__y_o_u_k__e_ep__p_r_a_c_t_ic_i_n_g__it_ (只要你不断地练习)．
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[即时演练 2] (1)单句语法填空
①(2015·湖南高考改编)Video games can be a poor influence if __le_f_t_ (leave) in the wrong hands. ②He won't go there unless invited (invite)． ③He picked up a wallet while walking (walk) home. ④Hurry up or we will be late.首页Fra bibliotek上一页
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How can they learn anything when they spend all their spare time watching television?
既然他们把所有空闲的时间都用来看电视了，还能学到什么 东西呢？
Only if you take an active part in physical activity will you be able to keep fit and stay healthy.
只有积极参加体育锻炼，你才能保持身体健康。 Unless one is fully prepared, outdoor sports can sometimes mean injuries. 要是没有充分准备的话，户外运动有时会意味着受伤。
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2．主将从现 条件状语从句如果表示将来的时间，用一般现在时代替一般 将来时。 I won't wait for him unless he calls me. 除非他给我打电话，否则我不会等他。
immediately.
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(2)单句语法填空 ①(2015·江苏高考改编)It is so cold that you can't go outside _u_n_l_es_s__ fully covered in thick clothes. ②(2015·陕西高考改编)I believe you will have a wonderful time here once you get to know everyone else. ③I told him he would succeed only if he tried hard. ④I'll let you have the book on condition that you return it
If exposed to very loud music every day, young people may risk going deaf.
如果年轻人每天都处于嘈杂的音乐的影响中，他们很可能有
变聋的危险。
If (it is) possible, this machine can be changed for a new one. 如果可能的话，这台机器会换成一台新的。
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If Tom passes the examination, his father is going to buy him a bicycle.
如果汤姆考试及格，他父亲将会给他买一辆自行车。 You may watch TV as long as you finish your homework. 只要你做完作业，你就可以看电视。 Suppose/Supposing the plane does not arrive on time, what shall I do? 假定飞机不能准时到，我该怎么办？
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一、条件状语从句 1．条件状语从句的引导词 引导条件状语从句的词/短语有：if (假设，如果), unless (除 非), so/as long as (只要), suppose/supposing (that)(倘若，假设); only if ( 只 有 …… 才 ), provided/providing (that)( 如 果 ), on condition that (条件是), in case (如果，万一), when (如果；既然， 考虑到)。
to me next week. ⑤(2014·大纲卷改编)Unless some extra money is found (find),
the theatre will close.
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3．状语从句的省略 在时间、条件、让步等状语从句中，当从句主语与主句主语
一致或从句主语是 it，且从句的谓语部分含有 be 动词时，可以将 从句中的主语与 be 动词一起省略。
②(2015·北京高考改编) Once the damage is done (一旦被毁坏),
it will take many years for the farmland to recover. ③(2014·湖南高考改编)You will never gain successu_n_le_s_s_y_o_u__a_r_e_ _fu__ll_y_d_e_v_o_t_e_d__to__y_o_u_r_w__o_r_k_ (除非你全身心地投入到工作中去)． ④(2014·四川高考改编)I'll be out for some time. _In__c_a_s_e_a_n_y_t_h_i_n_g_ __im__p_o_r_t_a_n_t_h_a_p__p_e_n_s__ (万一发生了什么重要的事情), call me up
Section Ⅲ
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Grammar—条件状语从句和让步状语从句
语法图解
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探究发现
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①If you say the word “communication”， most people think of
words and sentences. ②In case there is a fire, what will you do first? ③You won't arrive there on time unless you take a plane. ④Even if you were busy, you should take care of your family. ⑤Clever as he is, he doesn't make great efforts in his lesson. ⑥However much I tried, I couldn't work the question out. ⑦He keeps taking physical training in winter no matter how cold
While (she was) listening to the radio, she fell asleep. 她在听收音机时睡着了。