哪句对,为什么? A,my work is to teach them, B my work is teaching them.什么时候是不定式,什么时候是动名词

哪句对,为什么? A,my work is to teach them, B my work is teaching them.什么时候是不定式,什么时候是动名词 哪句对,为什么?A,my work is to teach them,B my work is teaching them.什么时候是不定式,什么时候是动名词 强调句It is where my father works that I work.It is where my father works that I work in.哪个对?为什么呀. I was in a hurry to finish my work 同义句I ___ my work __ my mother said that i should work hard .(1)my mother said that i should be work hard.(2)第一句对还是第二句对 When I was a child ,I lived with my motherWhen I was a child,I lived with my mother,my father having been away to work in the town.1.问此句,为什么用having been?2.my father having been away to work in the town.该如何翻译?是什么时态? I spent three and a half hours doing my work.(改同义句)I spent ____ ____ ____ ____ ____ doing my work. They are my parents and me.与They are my parents and I.两句话哪 句对?为什么? thanks to your help,i could finish my work为什么不是I can finish my work finish,nine,work,i,my,at 连词成句 I have to finish my work today.改否定句 I have success in finishing my hard work同意句 I finished my work yeserday 改为否定句. I’ve already finished my work改为提问句 I’ve already finished my work改为提问句 倒装句和完成时的表达although there are no exams,no tests,never in my life have i worked so hard in a class.为什么用完成时have i worked,不用did i work? only倒装句疑问only倒装句要如何还原?Only then did I begin my work on designing a new bridge. I began my work on designing a new bridge only then 为什么还原后only then 要放最后? I have finished my home WORK .对 finished my home WORK.进行提问?该怎么说