he+unbuttoned+his

@糜伏3913:卢瑟福用 a 粒子轰击氮核时发现了质子.完成其核反应方程: N+ He→ &n... -
谯购18029858431…… O+ H :由核反应方程满足质量数守恒和电荷数守恒,核反应方程为 N+ He→ O+ H.

@糜伏3913:during的用法 -
谯购18029858431…… during的涵义是“当„„之际”,它既可指某个动作在某个时期里连续不断地进行,也可以指某个动作在这段时期里的某个时间发生. 本题They __ nothing to heip the homeless girl during the last school year.答案是have done . 是during和现在完...

@糜伏3913:make后面可以接句子吗? -
谯购18029858431…… make不可以接句子,make作“使得”的意思解时,常有以下几种用法: 1. make+sb/sth+形容词 2. make+sb/sth+do sth 3.make+sb/sth+形容词的比较级

@糜伏3913:情态动词 表猜测语气的反义疑问句构成
谯购18029858431…… 这两个都可以. 若must表示推测,反意疑问句不能用must,而应根据must后的动词结构采用相应的动词形式: He must be tired, isn't he? 他一定累了,是吗? He must have read it, hasn't [didn't] he? 他一定读过它,是吗? He must have left yesterday, didn't he? 他昨天一定走了,是吗? (from www.yygrammar.com) 【注】当陈述部分为“must+完成式”时,反意疑问句可用have (has),也可用did.但若句中出现了过去时间状语,,则通常用did.(如上例所示)

@糜伏3913:英语中be made+....的用法区别 -
谯购18029858431…… be made + 介词短语 *be made of … 由……制成.从成品中仍可以看出原材料. The desk is made of wood . *be made from … 由……制成.从成品中看不出原材料的成份或特征. Paper is made from wood . *by made by … 由……制成.by强调...

@糜伏3913:will 什么时候+be 什么时候不+be -
谯购18029858431…… will be+名词/形容词/介词短语/副词做表语,如He will be at home tomorrow./I will be happy if you can come. will +do既实意动词表示动作+宾语或状语如 He will come back this afternoon./I will clean the room in five minutes.

@糜伏3913:纯He气是什么气体? -
谯购18029858431…… He是超纯纯氦气 或纯氦气 氦气,英文名为Helium,符号为He,无色无味,不可燃气体,空气中的含量约为百万分之5.2.化学性质不活泼,通常状态下不与其它元素或化合物结合.1908年7月10日,荷兰物理学家昂尼斯首次液化了氦气.纯...

@糜伏3913:he加一个字母成新单词 -
谯购18029858431…… her she the Your search for -he matched 2 words in this word list she the Your search for he- matched 10 words in this word list heh hem hen hep her hes Your search for e-h matched 2 words in this word list edh eth het hew hex hey Your search for h-e matched 4 words in this word list hae hie hoe hue

@糜伏3913:can+be+done+和can+do区别 -
谯购18029858431…… 答案是: can be done 是被动语态,can do 是主动语态,比如: The work can be done by anyone .这项工作任何人都会做.I can play the guitar very well.我吉他弹得非常好.

@糜伏3913:He works hard. 这是个什么句子结构? -
谯购18029858431…… 这是英语5大基本句型之一:主语 + 谓语 1. 该类型句子特点:谓语只能由不及物动词担任. 2. 该句子分析:he 是主语,works是谓语,hard作为副词修饰动词works,意思为“他工作很努力”.

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