1. It was difficult for him to understand the math problem.(他理解这个数学问题很困难。)2. It was important for her to study hard for the exam.(她为了考试而努力学习很重要。)3. It was easy for them to solve the puzzle.(对他们来说解决这个谜题很容易。)4. It was excitin...
It is very important for you to study English well .It is kind of you to hel me .用for sb 还是用of sb ,主要是看句中的adj,如果形容词是强调某个人的性格特征的,就用of sb ,不是强调人的就用for sb
it's. useful. for. US. to. learn. English. it's. happy. of. her. to. help. others It is a useful for he to take.
理解不全对,sb是for的宾语,所以用宾格。句子不对,要用them ,如果是其他人称,用me,him her, them us you it理解不全对,sb是for的宾语,所以用宾格。句子不对,要用them ,如果是其他人称,用me,him her, them us you itsb 是介词for的宾语,所以后面的sb要用宾格,只能用them,me,us,y...
这是为某人做某事。(不知道对不对,希望能帮到你。)It