o(∩_∩)oOnly when the whole city was covered in the thick fog _______ the importance of environmental protection.A.people realized B.people had realized C.did people realize D.had people realized 请问一下为什么这题应该选择C而不是D
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![o(∩_∩)oOnly when the whole city was covered in the thick fog _______ the importance of environmental protection.A.people realized B.people had realized C.did people realize D.had people realized 请问一下为什么这题应该选择C而不是D](/uploads/image/z/7322293-37-3.jpg?t=o%28%E2%88%A9_%E2%88%A9%29oOnly+when+the+whole+city+was+covered+in+the+thick+fog+_______+the+importance+of+environmental+protection.A.people+realized+B.people+had+realized+C.did+people+realize+D.had+people+realized+%E8%AF%B7%E9%97%AE%E4%B8%80%E4%B8%8B%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E9%A2%98%E5%BA%94%E8%AF%A5%E9%80%89%E6%8B%A9C%E8%80%8C%E4%B8%8D%E6%98%AFD)
o(∩_∩)oOnly when the whole city was covered in the thick fog _______ the importance of environmental protection.A.people realized B.people had realized C.did people realize D.had people realized 请问一下为什么这题应该选择C而不是D
o(∩_∩)o
Only when the whole city was covered in the thick fog _______ the importance of environmental protection.
A.people realized
B.people had realized
C.did people realize
D.had people realized
请问一下为什么这题应该选择C而不是D呢?
o(∩_∩)oOnly when the whole city was covered in the thick fog _______ the importance of environmental protection.A.people realized B.people had realized C.did people realize D.had people realized 请问一下为什么这题应该选择C而不是D
同学,很高兴回答你的问题
正确答案确实选C
即:Only when the whole city was covered in the thick fog did people realize the importance of environmental protection.
翻译:只有当整个城市笼罩在浓雾之下,人们才会意识到环保的重要性.
解析:only 在句首时句子要倒装,句子为主从复合句,则主句倒装,从句不倒装.本句中从句的时态是一般过去时,那么主句的时态也要用一般过去时,不能用过去完成时,因为when 的意思是当...时,一般前后的时态应该是一致的,如果主句的动作发生在从句的动作之前,则主句用过去完成时,即“过去的过去”.而本句主句的动作应该是发生在从句的动作之后的,即先浓雾笼罩城市,后来人们才意思到,显然不能用过去完成时,所以D是错误的.
再给你看一道类似的例题,
Only when _____ home_____ that he had left his bag in the taxi he had taken.[ ]
A.he returned; did he realize
B.did he return; did he realize
C.he returned; he realized
D.did he return; he realized
Only when _____ home_____ that he had left his bag in the taxi he had taken.
A.he returned; did he realize
B.did he return; did he realize
C.he returned; he realized
D.did he return; he realized
答案:A
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不明白请继续追问,
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D only when 提前句子要倒装
C.only 开头部分倒装,即用助动词/情态动词放于句首
前面是过去时所以用did 倒装
D选项是过去完成时强调动作发生在whole city was covered 前与题意不符排除
此为Only的倒装句 the whole city was covered in the thick fog被提前,而前句有was,如果为正常语序应为people did realize,但因倒装,故选C
因为出现了only在句首,所以要倒装
然后从句中是was,一般过去时,主句用had 的话是发生在过去的过去,也就是was covered 之前,与句意不符。
题中有was,说明是过去时,而realize并非发生在cover之前,故用一般过去式,选C
C 1)语序问题:only +状语(可能是副词、介词词组或是状语从句) 放在句首,句子需要用部分倒装(若有从句的话,注意是主句倒装); 2)时态问题:“只有当整个城市被笼罩在浓雾之下的时候,人们才意识到环保的重要性”was covered 与realiezed 都应用过去式。...
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C 1)语序问题:only +状语(可能是副词、介词词组或是状语从句) 放在句首,句子需要用部分倒装(若有从句的话,注意是主句倒装); 2)时态问题:“只有当整个城市被笼罩在浓雾之下的时候,人们才意识到环保的重要性”was covered 与realiezed 都应用过去式。
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