随着越来越多的森林被砍伐,每年有大量的泥土被冲刷走了。 There is a small quantity of water left in the bottle. 瓶子里还剩下少量的水。 A large quantity of books are on sale now. 大量图书现在正在热销。 Great quantities of fish were caught that day. 那天抓了很多鱼。 当must 作“必须”讲时,其反意疑问部分用needn't;当含有mustn't(不允许、 禁止)时,其反意疑问部分用must。如: You must go now,needn't you? 你现在必须走,是吗? You mustn't smoke here,must you? 你不可以在此吸烟,行吗? 当must/may(might)表示推测,即must作“一定,准是”讲,may/might作“可能” 讲时,可首先将句子改为“I am sure/guess that从句”,反意疑问部分的动词形 式根据be sure/guess后的宾语从句的谓语动词形式确定。如: 1.You must/may(might)be hungry now, ?→I am sure/guess that you are hungry now,aren't you?→You must/may(might)be hungry now,aren't you? 知识清单三 反意疑问句 一、陈述部分含有must的反意疑问句 你现在一定/可能饿了,是吗? 2.You must have heard about it, ?→I am sure that you have heard about it, haven't you?→You must have heard about it,haven't you? 你一定听说过这件事了,是吗? 3.You must have watched that football match last night, ?→I am sure that you watched that football match last night,didn't you?→You must have watched that football match last night,didn't you? 你昨晚一定看那场足球赛了,是吗?(陈述部分有表示过去的时间状语last night) 二、陈述部分含有used to 的反意疑问句 其反意疑问部分用 usedn't或didn't均可。如: You used to sleep with the windows open,usedn't/didn't you? 你过去经常开着窗户睡觉,是吗? 三、陈述部分含有ought to的反意疑问句 其反意疑问部分用oughtn't或shouldn't均可。如: He ought to attend the lecture,oughtn't/shouldn't he? 他应该去听这个演讲,是不是? 四、陈述部分含有否定词或半否定词的反意疑问句 当陈述部分带有seldom,hardly,scarcely,never,few,little,nothing,nobody等否定词 或半否定词时,反意疑问部分的动词用肯定形式。如: He could hardly walk without a stick,could he? 没有拐杖他几乎不能走路,是吗? 五、如果陈述部分含有由表示“否定”意义的前缀构成的词,其反意疑问部 分一般用否定式。如: Tom dislikes playing tennis,doesn't he? 汤姆不喜欢打网球,是吗? It's unfair,isn't it? 那不公平,不是吗? 六、陈述部分含有宾语从句的反意疑问句 1.当陈述部分带有宾语从句时,反意疑问部分的主语与助动词常和主句保持一 致。如: He said that he would come to my birthday party,didn't he? 他说他要来参加我的生日聚会,是吗? 2.陈述部分主句的谓语动词是think,believe,suppose,guess,expect,imagine,且主 语为第一人称时,反意疑问部分的主语和时态与宾语从句的主语和时态保持 一致;陈述部分主句的主语为第二、三人称时,反意疑问部分的主语和时态与 主句的主语和时态保持一致。如: I don't believe he will succeed,will he? 我认为他不会成功,会吗? Tom doesn't believe Jane will succeed,does he? 汤姆认为简不会成功,对吗? 七、祈使句的反意疑问句 祈使句后的附加问句不表示反意,而表示一种语气。其结构为: 1.否定祈使句,+will you? 2.肯定祈使句,+will/won't you? 3.Let's...,+shall we? 4.Let us...,+will/won't you? 5.Let+第三人称...,+will you?如:
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