几道高中英语选择Many young people in the West are expected to leave __ could be life' s most important decision -- marriage -- almost entirely up to luck.A.as B.that C.which D.what选C,为什么选C我了解some people against toll booths arg

几道高中英语选择Many young people in the West are expected to leave __ could be life' s most important decision -- marriage -- almost entirely up to luck.A.as B.that C.which D.what选C,为什么选C我了解some people against toll booths arg
几道高中英语选择
Many young people in the West are expected to leave __ could be life' s most important decision -- marriage -- almost entirely up to luck.
A.as B.that C.which D.what
选C,为什么选C我了解
some people against toll booths argue that roads,once____,should be free.
为什么是built ,不是being built?
是因为being built是表示正在?而这里是已经建完?
oh
我错了..
第一题选D...

几道高中英语选择Many young people in the West are expected to leave __ could be life' s most important decision -- marriage -- almost entirely up to luck.A.as B.that C.which D.what选C,为什么选C我了解some people against toll booths arg
1.D
翻译：西方的很多年轻人期望把可能是（自己）一生中最重要的决定--即婚姻--几乎完全留给运气（缘分）（去决定）.
leave是使役动词动词,后面是其宾语,即宾语从句__ could be life' s most important decision,marriage只是这个宾语的同位语而已,进一步讲明这个宾语的具体内容,而almost entirely up to luck这是宾语补足语.
这是典型的“使役动词 + 宾语 + 宾语补足语”结构.
此宾语从句缺少引导词,很明显该从句缺少表物（即marrigae）的主语,所以用what来代替补充.
另注：宾语从句的引导词有三种,不缺成分用that引导,缺“是否”用if/whether引导,却其他成分则选择相对应的疑问词来引导.
2.答案：built
此题考查状语从句的省略.即once built = one (roads are) built.
该语法规定如下：如果状语从句的主语和主句主语相同或从句主语是it,且从句的谓语由be动词开始,则可以把状语从句的主语和be动词一起省略.
楼主理解正确.如果是being built,则once being built = once roads are being built的话,则句意不通,因为“如果公路只是正在被建的话,怎么可能就马上免费”呢?当然应该是“如果公路一旦被建好,就应该免费（向外开放）”了.

第一题翻译，许多西方的年轻人期望把人生最重要的决定--婚姻--留给命运去决定。
built表示已经修完啦 ， being built表示正在建！

Many young people in the West are expected to leave __ could be life’s most important decision -- marriage -- almost entirely up to luck.
A. as B. that C. which D. what
选C，为什么选C我了解
我想知道这句话...

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Many young people in the West are expected to leave __ could be life’s most important decision -- marriage -- almost entirely up to luck.
A. as B. that C. which D. what
选C，为什么选C我了解
我想知道这句话什么意思？
回答：首先要知道句子中的短语leave … up to sb./sth.意思是“交由…决定”，那么就会发现及物动词leave后的“__ could be life’s most important decision”应该是一个宾语从句，而这个从句中没有主语，as不可以引导宾语从句，that引导宾语从句不可以作成分，只有从C. which D. what考虑，但是which指的是“哪一个”，题干根本没有提供范围，只有选D。那么what这里是什么意思呢？原来what有一个模糊的意义，根据不同的语境有不同的意义。如：
what 用作复合关系代词时，既可指代人又可指代物。例如：
① China is no longer what it used to be？ 中国已不是过去的中国。
② She is what you call a “bluestocking”。 她就是你说的“女才子”。
③ She is not what she was five years ago. 她不再是5年前的她了。
④We will make the factory twice what it is today. 我们将使工厂比现在规模增加一倍。（句中的twice what it is today是动词make的宾语the factory的补足语）
⑤Gravity is what makes you weigh what you weigh. 地心吸引力使人称得现有的重量（句中的第一个what到句末为表语从句；句末的what you weigh 是说明前面的动词weigh，系回答how much 的问题，作状语
综上所述，D为正确答案。句意是：婚姻也许是人生最重要的决定。在西方，许多年轻人却把它几乎彻底地交给运气来决定。
some people against toll booths argue that roads, once____，should be free.
为什么是built ,不是being built?
是因为being built是表示正在？而这里是已经建完？
问题补充：
oh
我错了..
第一题选D...
回答：你的理解是对的，根据“应该免费”知道是道路修好以后的事情了，可以吧句子补全，就是once they have been built，这样能理解吗？句意是：一些反对收费的人认为，这些道路一旦修好，就应该免费。

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婚姻也许是人生最重要的决定，西方的许多年轻人却把它寄希望于或者几乎彻底地交给运气来决定
一些反对收费站的人在争论那些已经被修完的路是否已经免费！
built表示已经修完啦 ， being built表示正在建！