9.Do you think it worthwhile to spend so much time and money cloning a cow?只是什么句式,为什么不是it is
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![9.Do you think it worthwhile to spend so much time and money cloning a cow?只是什么句式,为什么不是it is](/uploads/image/z/13970016-0-6.jpg?t=9.Do+you+think+it+worthwhile+to+spend+so+much+time+and+money+cloning+a+cow%3F%E5%8F%AA%E6%98%AF%E4%BB%80%E4%B9%88%E5%8F%A5%E5%BC%8F%2C%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E6%98%AFit+is)
9.Do you think it worthwhile to spend so much time and money cloning a cow?只是什么句式,为什么不是it is
9.Do you think it worthwhile to spend so much time and money cloning a cow?
只是什么句式,为什么不是it is
9.Do you think it worthwhile to spend so much time and money cloning a cow?只是什么句式,为什么不是it is
这是复合句,it是形式宾语,真正的宾语是动词不定式,
这是一个固定用法
it adj to do sth
例:
1 It is important to drink enough water every day.
it形式主语,没有意思的,to drink enough water every day真正主语,意思是:每天喝足够的水很重要。你看,主语那么长,而谓语就is important 那么短,是不是头重...
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这是一个固定用法
it adj to do sth
例:
1 It is important to drink enough water every day.
it形式主语,没有意思的,to drink enough water every day真正主语,意思是:每天喝足够的水很重要。你看,主语那么长,而谓语就is important 那么短,是不是头重脚轻啊,为了句子平衡,使用了形式主语,而把真正主语放在后面,所以句型:it‘s+adj+to do 的意思是:做某事怎么样。
2 Doctors think it is important to drink enough water every day.
这时候It is important to drink enough water every day.
是宾语从句,作think的宾语。因为think 可以形成think+ 宾语+宾语补足语,所以此句可改成Doctors think it important to drink enough water every day.
也就是少了be动词is.此时,it是形式宾语
important为宾语补足语to drink enough water every day为真正宾语。
能这样用的,除了find外,常见的还有:find,believe等
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it 是形式主语,真正的主语是to 后面的一句。