①die died dead
②His father had died three years
③反意疑问句是英语四大问句之一,它是由一个陈述句加上一个短问句而构成的。反意疑问句的基本构成形式是:陈述句+动词(肯定或否定)+主语?如:
①She often has lunch at school, doesn’t she? ②You don’t like sports, do you?
使用反意疑问句要注意以下若干对应规则:
一、 反意疑问句中问句部分的动词与陈述部分的动词在语气上成相反的对应关系,即:
肯定+否定? 否定+肯定?如:
①You can’t do it, can you? ②They are very late for the meeting, aren’t they?
二、 反意疑问句中问句部分的动词与陈述部分的动词种类要对应一致。如:
①He has supper at home every day, doesn’t he? (不能用hasn’t he?)
②They have known the matter, haven’t they? (不能用don’t they?)
三、 反意疑问句中问句部分的动词在时态上应和陈述部分的时态一致。如:
①They will go to town soon, won’t they?(不能用don’t they?或 aren’t they?)
②He works very hard, doesn’t he?(不能用didn’t he?或won’t he?)
四、 反意疑问句的陈述部分含有由un-, im-, in-, dis-, 等否定意义的前缀构成的词语时,陈述部分要视为肯定含义,问句部分用否定形式。如:
①Your father is unhappy, isn’t he?(不能用is he?)
②The man is dishonest, isn’t he? (不能用is he?)
③It is impossible to learn English without remembering more words, isn’t it?(不能用is it ?)
五、反意疑问句的陈述部分带有little, few, never, hardly, seldom等否定意义的词时,问句部分用肯定式。如:
①She never tells a lie, does she?(不用doesn’t she?)
②He was seldom late, was he?(不用wasn’t he?)
六、反意疑问句的陈述部分为I am……时,问句部分习惯上用aren’t I?表示。如:
I am a very honest man, aren’t I?
七、反意疑问句的陈述部分为I(We) think(believe, suppose, consider) + that从句时,问句部分的动词及主语与that从句内的动词和主语保持一致。如:
①I think that he has done his best, hasn’t he?
②We think that English is very useful, isn’t it? (不用don’t we?)
八、反意疑问句的陈述部分为I(We) don’t think(believe, suppose, consider)+ that从句时,从句为否定意义,问句部分的动词和主语仍与that从句保持一致且用肯定式。如:
①I don’t think that you can do it, can you? (不用do I?)
②We don’t believe that the news is true, is it? (不用do we?)
九、反意疑问句的陈述部分为非第一人称主语+ think(believe, suppose, consider) + that从句时,问句部分的动词和主语与陈述部分的主句动词和主语保持一致。如:
①They all think that English is very important, don’t they? (不用isn’t it?)
②He didn’t think that the news was true, did he? (不用wasn’t/ was it?)
十、反意疑问句的陈述部分为主语+said( told, reported, asked……) + that从句时,问句部分的动词和主语与陈述部分的主句动词和主语保持一致。如
①They said that you had finished your work, didn’t they? (不用hadn’t you)
②Kate told you that she would go there, didn’t she? (不用wouldn’t she?)
十一、陈述部分的主语为不定代词something, anything, nothing, everything时,问句部分的主语用it。如:
①Something is wrong with the computer, isn’t it?②Nothing has happened to them, has it?
十二、陈述部分的主语为不定代词somebody(someone), anybody(anyone), nobody(no one), everybody(everyone)时,问句部分的主语用he或 they,这时问句动词的数应和he或 they一致。如:
①Someone has taken the seat, hasn’t he?②Everyone has done their best in the game, haven’t they?
十三、陈述部分为Let me……时,问句部分习惯上用shall I? 或will you?形式。如:
Let me have a try, shall I?(will you?)
十四、陈述部分为Let us……时,问句部分习惯上用will you?形式。如:
Let us stop to rest, will you?
十五、陈述部分为Let’s……时,问句部分习惯上用shall we?形式。如:
Let’s go home together, shall we?
十六、陈述部分用上述情况以外的祈使句时,问句部分一般用will you?形式表示请求,用won’t you?形式表示委婉请求或邀请。如:
①Do sit down, won’t you?/ will you? ②You feed the bird today, will you?
③Please open the window, will you?(won’t you?)
十七、陈述部分为否定祈使句时,问句部分一般用will you?形式。如:
Don’t make any noise, will you?
十八、陈述部分为There (Here) + be + 主语时,问句部分用动词+there(here)?形式。如:
①There are two cakes on the plate, aren’t there? ②Here is a story about Mark Twain, isn’t here?
十九、陈述部分用had better +原形动词表示建议时,问句部分用hadn’t +主语?形式。
①You’d better tell him about the matter, hadn’t you?②We had better do it by ourselves, hadn’t we?
二十、陈述部分用used to +主语时,问句部分用didn’t + 主语?或usedn’t +主语?形式。
①He used to live in the country, didn’t he?/usedn’t he?
②They used to be good friends, didn’t they?/usedn’t they?
二十一、陈述部分用must(may, might) + have + V-ed表示推测时,若句中带有明显的过去时间状语,问句部分动词用过去时形式。如:
①He might have forgotten his pen in the classroom yesterday, didn’t he?
(不用mightn’t he?/ hasn’t he?)
②You must have got up late this morning, didn’t you?(不用mustn’t you?/haven’t you?)
二十二、陈述部分用must(may, might) + have + V-ed表示推测时,若句中没有带明显的过去时间的状语,问句部分动词用现在完成时形式。如:
①Everyone must have known the death of the waitress, haven’t they? (不用mustn’t they?)
②You must have worked there a year ago, didn’t you?(不用mustn’t you?/ haven’t you?)
二十三、陈述部分的主语为从句时,问句部分的主语一般用it代替,如:
①What he said is true, isn't it? (不用didn’t he?)
②Where we will build the dam has not been decided yet, has it? (不用won’t we?)
二十四、陈述部分的主语为动名词或不定式时,问句的主语用it代替。如:
①To do one good deed is easy for a person, isn't it?②Skating is your favorite sport, isn't it?
⑤ tried cried flew
写不下了,加QQ,一个一个告诉你吧。763664412
化学题:(1)题,问题有些不够严谨,我简单分析一下,首先选项A里+1,外2,表示的是-1价的氢,是错的; 选项B,该物质是氦,氦是没有原子态的,只能是分子形式存在,所以是错的;选项C,是钠离子,是错的;选项D,是氯,一般情况下就只能选择D。
讨论一下作者的推论,
(1)“稀有气体最外层电子数一般为8”。还有外层可能是2,就是题里的B选项,所有稀有气体都是分子形式存在。
(2)“那最外层电子数是4,怎么判断是什么呢?”。作者还没学到副族元素吗?如果没有,我就简单说一下主族元素。最外层电子数是4的元素一般都会是过度元素,有金属的性质,也有非金属的性质,好像碳、硅等,这几个过度元素只能自己死记硬背,人家100多个元素都是全部背熟的。
(3)“为什么相对原子质量≈质子数+中子数啊”。原子是由质子、中子和电子组成,其中电子的质量约=9.3*10^(-31)kg,由于小了很多个数量级,所以忽略不算了。
第二句,
His father has been dead for three years
His dad died three years ago.
这两句话都能表达原来的意思,现在完成时和一般过去式都可以。
但是这里怎么能用过去完成时呢?过去完成时必须要有一个过去的时间点作为参照点才可以用。
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⑤try,cry,fly的过去式,过去分词,现在分词形式
tried, cried, flied 过去式和过去分词一样
trying, crying, flying
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1.他问的不是原子么,因为圈里是质子数,质子带正电。
A是氢原子,没错
B是He,外面应该有四个电子,这里少了两个电子;
C是钠离子,少了一个电子
D是Cl,这个应该是原子啊。。 不知道为什么不对
所以我觉得选AD
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2. 那你看最外层是四的元素什么。包括碳(C)、硅(Si)、锗(Ge)、锡(Sn)、铅(Pb )。
带金字边的就是金属。你现在刚开始学化学,还不太熟,碳族元素是一部分金属,一部分非金属,记下来就好了。初中阶段只学碳元素,所以对你来说最外层四个电子就是非金属碳元素了。
化学①:我也觉的是BD啊……
化学②:……你问这个问题纯属浪费,他不会给你电子让你判断的啦。听姐的,姐是过来人!而且……我这高中呢,都没考这内容。估计要大学了吧?
化学③:原子质量极小,且99.9%集中在原子核。
而且,原子核=质子+中子(H除外,它只有质子)
相对原子质量目前只约等于这个,其他的不属于初中范畴。你暂时可以放弃,把精力投放到其他科目去,那样会对总体成绩更有帮助哦!
最后,祝你考上理想的中学!
1.die died died death 2.His father has been died for three years. 3.He has been died,hasn't he? 4.who的意思是‘谁’,WHOM是WHO的宾语形式,WHICH是哪一个,THAT无实意 5.try tried tried cry cried cried fly flew flew OK啦!O(∩_∩)O,至于化学嘛,唉,不咋懂啊,望你能接受我的答案,Thank you ......