My mother has taught in this school (since she was less than thirty.)对括号部分提问 （）（）（）your mother（）in this school?

My mother has taught english he has never visted the Great Wall 类似这样的句子中的has是什么成分如题My mother has taught english he has never visted the Great Wall 、两句 My mother _____ mathematics in my hometown ever since she graduated from the university.taught teaMy mother _____ mathematics in my hometown ever since she graduated from the university.taught teaches has taught is teaching My mother _____ mathematics in my hometown ever since she graduated from the university.taught teaMy mother _____ mathematics in my hometown ever since she graduated from the university.taught teaches has taught is teaching My mother has taught in this school (since she was less than thirty.)对括号部分提问 （）（）（）your mother（）in this school? My father and mother taught chinese.同义句My parents__________ __________ chinese teachers. 求翻译,Mother has taught me never to accept pay for a kindness. 为什么have done也可表示持续到现在的动作或 状态例如My mother has taught English for twenty years那他和have been doing 表示持续到现在的动作或 状态有什么区别? My mother has never been abroad My mother has two ______(watch) My mother has some butter 句型转换 My mother taught me_____(write)and_____(read)when I was two years old. Last night my mother taught me some old_____ .They sounded great. My mother has two blue sweaters.=My mother has two sweaters （ ）（ ）. my mother has a brother ,he is my u------- Is your mother an experienced English teacher?Yes,She has taught English ____ thirty tears ago.A.for B.since my father has taught english ____(since/for/after) over ten years 用since,for填空my good friend's mother has taught in that school __less than 3 years the old woman has had a fever ___the day before yesterdayhe has lived in this hotel ___he arrived herewe have learned five lessons ___the beginning of this termmr My father has taught English for ten years My father has been teaching English for ten yearsMy father has taught English for ten yearsMy father has been teaching English for ten years都对吗?