it is adj + doing or to do?会的请帮解答Q1.It is useful/useless/nice/good/interesting/expensive (to do / doing?)这种的it is 加 adj 後面的到底用哪种正确?似乎网上也很多人搞不太清楚有些说只能用 to do sth有些说只

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it is adj + doing or to do?会的请帮解答Q1.It is useful/useless/nice/good/interesting/expensive (to do / doing?)这种的it is 加 adj 後面的到底用哪种正确?似乎网上也很多人搞不太清楚有些说只能用 to do sth有些说只
it is adj + doing or to do?会的请帮解答
Q1.
It is useful/useless/nice/good/interesting/expensive (to do / doing?)
这种的it is 加 adj 後面的到底用哪种正确?
似乎网上也很多人搞不太清楚有些说只能用 to do sth有些说只能用doing sth
有些说两种都可以?因为有人说什麼是正在做用doing 还没做用to do?看不懂
请教真正会的告知下不错再加分 不会的请勿乱回答 转贴 xie xie!
Q2.
还有这种
It is fun 这个後面是doing sth还是 to do sth?也搞不清楚

it is adj + doing or to do?会的请帮解答Q1.It is useful/useless/nice/good/interesting/expensive (to do / doing?)这种的it is 加 adj 後面的到底用哪种正确?似乎网上也很多人搞不太清楚有些说只能用 to do sth有些说只
It is + adj. + to do something结构
　　句中it是形式主语,真正主语是动词不定式to do something.因此也可以表达为to do something + is +adj..
　　e.g. It is amazing to drive past fields which seem to go on forever or whole hills covered with neat rows of grapevines.
　　本句形式主语为it.真正主语to drive…grapevines移到了句子后部,使句子变得平稳,不致主语太长.如果把真正主语放在前面,那么整个句子就显得头重脚轻.因此,就用it作为先行主语.
　　这种结构还有两种动词不定复合结构.
1. It is + adj. + for somebody to do something
2. It is + adj. + of somebody to do something

it is adj.to do sth.it is adj.doing sth.有什么区别it is adj.to do sth.it is adj.doing sth.有什么区别? It is +adj doing 什么时候用?It is +adj to do什么时候用? it is + adj.+of/for sb.+to +doing?to是介词吗?介词后加doing? it is adj + doing or to do?会的请帮解答Q1.It is useful/useless/nice/good/interesting/expensive (to do / doing?)这种的it is 加 adj 後面的到底用哪种正确?似乎网上也很多人搞不太清楚有些说只能用 to do sth有些说只 老师问一下,it is +名词+doing对吗it is +adj.+to do和+doing有什么区别? it is+adj+从句 it's adj+to do还是doing? it is no good doing 可以用 to do 代替doing 为什么?平时最熟悉的是it is +adj + to do it作形式主语的问题it's +adj+to do sth是否等于it's+adj+doing sth例如it's wrong to do sth是不是可以说成it's wrong doing sth?如果不能,那么it's+adj+to do sth除了to do sth +is + adj有同义句吗?“动词不定式作主语 it is my frist time to do sth / or doing sth/or do sth? 请教it is no use doing我觉得好乱啊!it is no use doing sth , 但是it is adj + to do ,这叫什么事啊?为什么不能说it is no use to do 呢? “It's + adj.+ to do 不定式”与“It's + adj.+ doing sth.”的区别 类似于it is no use doing,是不是只要it is 后面加的是n.而不是adj.后面就是加动名词的? what is it doing what is it doing it is about doing how is it doing it isn't easy being the new kids at school.为什么用being而不是to beit is +adj+to do sth这里用这样不是说可以 it is +adj+doing sth