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提能专训(十二) Ⅰ.单句语法填空(并列句、状语从句) 1．If we work with a strong will, we can overcome any difficulty, ________ great it is. 答案：however 解析：考查让步状语从句。根据空前的内容可知：此处应用however引导让步状语从句，however great it is相当于no matter how great it is。 2．(2017·北京海淀区高三期末)The new policy allows a couple, to have a second birth ________ either is an only child. 答案：if 解析：考查条件状语从句。句意：如果夫妇二人有一人是独生子女的话，新政策允许他们生第二胎。这里用if引导条件状语从句，表示“如果”。 3．(2017·浙江考试院抽学校高三抽测)Take action today ________ you won't miss your windows of opportunity next time. 答案：so that 解析：考查目的状语从句。句意：现在就行动起来，以便下次机遇之窗向你打开时你不会错过。根据句意可知应用so that引导目的状语从句。 4．You know that some people say more but do less ________ others do the opposite. 答案：while 解析：考查并列连词。句意：你知道有些人说的多做的少，而有些人却与此相反。while在此处为并列连词，连接两个句子，表示“而，然而”。 5．________ scores of times, but he still couldn't understand it.(Having explained, Having been explained, Though it was explained, It was explained) | 
