there doesn't seem to have been any difficulty solving the p

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there doesn't seem to have been any difficulty solving the problem.为什么要用there不用it.
到底什么时候用therer什么时候用it.我一直很混绕

there be短语本身就有某体存在某物的意思.至于there 句（如你所列出的这句）与there be 句相似表示某物在某处.it 代词,代替前面所指的事物,可以做不定式主语,但后面必须加to,而你例句后面是solving the ,是分词做后置定语.例句可改为：it doesnt seem to have been any difficulty to solve the problem.there 只有放在句首时才做代词构成there be 表存在,其他时候 there 都做副词.

there doesn't seem to have been any difficulty solving the p ____doesn't seem to have been any difficulty solving theprob ___doesn't seem to have been any difficulty solving the prob ____doesn't seem to have been any trouble in solving this pr 连词成句 any,this,meaning,seem,to,you,doesn't,have,to,book he doesn't seem to have some friends.为什么不是any? He doesn’t seem to get the . there doesn't seem to be much chance of my getting the job.t the food heve doesn`t seem to agree with me He doesn't seem to have many friends; He seems not to have m you can't imagine what great trouble they have solving the p there doesn't seem much hope of our team与there doesn't seem