it is difficult to anwser this question.
这里涉及到的是不定式和动名词作主语的问题.一般情况是:不定式和动名词都可以在句中作主语,但下面一些词的后面一般用doing,如hopeless,useless,no use,no good等等.大多还是用to do作主语.如: It is no use crying spilt over milk (
虽然翻译出来的意思一样,但两者不能相等.第一句话what you are doing 作主语.第二句话what you are doing 是修饰difficult. 但是语法有问题.
it difficult to do sth:difficult修饰to do sth.例如:I feel it difficult to speak English.其中it指代speak English,difficult修饰speak English.It is difficult to do sth:常见句型,意思是:做什么事难.
一般是前一种说法,用一个形式主语 it 开头.有些老师会说这是固定句型之类的.其实,是老外说话的习惯.it's worth your while to go see the movie, which is real cool, dude (美国青少年可能这么说).
前者是对的 have difficult in doing sthit's adj for sb to do
本词是形容词 因此:1.做定语:a difficult task一次很难的任务.2.作表语:this task is difficult.这次任务很难.(注:普通形容词都可以如上用.)3. 句型:it is difficult for sb to do sth: 做某事对某人来说很难.如:it is difficult for me to do the task.4.名词是difficulty.句型:have difficulty (in) doing sth.如:i have difficulty (in) finishing the task.
it's difficult (in) doing sth.
楼主你弄错了,那个句子是have difficulty in doing sthdifficulty是名词difficult是形容词用形容词的时候只能是it is difficult to do sth