8/3''和1/2''分别是筛子的筛眼大小规格。sieves8/3''和1/2'' 即筛目分别为8/3英寸和1/2英寸的筛子。用这二种规格的筛子筛沙土,筛子上留下的块状物Lump。
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网友是初学者。have是个及物动词,必须有宾语。there 存在句的谓语动词通常是不及物动词,表示存在、发生等意义。There是形式主语,后接不及物动词作谓语,其后的名词是真正主语。如果用了及物动词have, 那么have没有宾语,一定是错误的。There is a book on the desk. 形式主语+不及物动词+真正主语+地点状语=结构正确。Th...
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There are a lot of different approaches but…this is, in my opinion, too often we underestimate how much can be accomplished just by appealing to people’s sense of moral duty, to their civic duty.该句中的how much并不是引导感叹分句,而是引导疑问分句。逻辑:低估了。。。能到什么程度。how表示疑问意义,...
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通常词序为不定冠词+形容词+单数名词。但如果形容词被副词so, as, too, how, that, this修饰,则词序为so/as/too/how/that/this+形容词+a/an+名词。例如:She is so beautiful a girl.I have as nice a car.This is too small a room.How big a house you have!I can't read that/this thick a book.
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with an erect carriage which she accentuated by throwing her body backward at the shoulders like a young cadet她像军训生一样挺起胸膛,肩头后收,突出了她笔直的身姿。at介词短语作状语,修饰throwing。
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when they are wearing a uniform, as male politicians essentially do.as引导比较分句,表示“正如/就像...那样”之意。类似的句子:He goes to work by bus, as most people do. She is beautiful, as her sister is. 通常认为as为连词,在从句中不作成分。其实,如果仔细分析的话,我们会发现其实as在引导从句的同时,还...
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have seen granted 为拼写错误,应改为have been granted. Over the past decade 时间状语, thousands of patents 主语 have been granted 被动语态谓语 for what are called business methods 主语的分隔式定语.
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一个动词的用法是约定俗成的。词典会告诉你一个动词的用法,当你不确定时就应该查词典。recommend没有双宾语用法。表示把某物推荐给某人,用recommend sth to sb. 《牛津》recommendrecommend somebody/something (to somebody) (for/as something) I recommend the book to all my students.She was recommended...
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that which= 融合型关系代词what = the thing whichthat为指示代词,用which引导的限制性定语从句来说明that指代什么。用that which而没有用what,这是正式语体。
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