作业帮It is worth considering what makes "convenience" foods so popular and ___better ones of your own.introducing,我明白了是与considering并列的.be worth doing结构?doing后是没宾语的.请分析一下这是什么结构的句子?是it充当形
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It is worth considering what makes "convenience" foods so popular and ___better ones of your own.introducing,我明白了是与considering并列的.be worth doing结构?doing后是没宾语的.请分析一下这是什么结构的句子?是it充当形
It is worth considering what makes "convenience" foods so popular and ___better ones of your own.
introducing,我明白了是与considering并列的.
be worth doing结构?doing后是没宾语的.
请分析一下这是什么结构的句子?
是it充当形式主语?
It is worth considering what makes "convenience" foods so popular and ___better ones of your own.introducing,我明白了是与considering并列的.be worth doing结构?doing后是没宾语的.请分析一下这是什么结构的句子?是it充当形
这句话的结构分析如下：
it：形式主语
considering ...and introducing...：整段是真正的主语
what makes "convenience" foods so popular：是considering的宾语从句
一般来说,it作形式主语有3种方式：
1） 代替不定式作形式主语：
It is my duty to help him.(it用作形式主语,代替置于句末、用作真正主语的不定式短语.）
2）代替动名词作形式主语,主要用在以下等词：
It is no use/ worth/ no good/ hard work/ dangerous/ a nuisance/ useless/ a waste/ senseless + 动名词.如：
It is no good taking this medicine.（it代替动名词talking作形式主语）
3）代替名词从句作形式主语或宾语.这类句式极为普遍,其中的名词从句可以用连词that、连接代词或连接副词来引导：
It is very likely that Team B will beat Team A this time.（it代替that引导的从句作形式主语）
以上说明如有不明白,请继续追问.
可以理解成一个主语从句 It做形式主语 真正的主语是what......of your own
因为consider是一个vi（不及物动词）所以后面不加宾语
it充当形式主语,what makes "convenience" foods so popular and ___better ones of your own.真正主语what-从句不是真正主语，而是considering宾语，否则introducing与considering并列就无法说清了。 如果considering and introducing作真正主语，那么considering...
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it充当形式主语,what makes "convenience" foods so popular and ___better ones of your own.真正主语
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