My sister has been working for this firm 与My sister has already worked for this firm是一样的吗?

my sister has never been to america i haven't neither（　）　（　）my sister and me has been to American句型转换是my sister has never been to america i haven't either My sister has been dancing for 10 years,(改为同义句)____ ____10 years ____ my sister ____ ____ dance. my sister has been staying in beijing for three months.这是什么时态,翻译 My sister has been working ()western China since graduated.A:at B:in C:on D My sister has been working for this firm 与My sister has already worked for this firm是一样的吗? has married和has been married有什么不同?具体的用法是怎样?My sister has been married for 5 years.My sister has married. Don't disturb.分别是什么意思？ She has been _____North City Park three times with my sister.A.on B.in C.about D.to my sister _______(stay)in Beijing for three months last year为什么用stayed不用has been staying 21.my sister has been studying for a test____a week.A.in B.since C.before D.for my sister has been working in a company ___computers after graduation.为什么用selling 不用to sell My sister likes w.geeen skirts It has been in my Well,my sister has a great sports ( ). my sister has long hair 一般疑问句 my sister has long legs 一般疑问句 my sister seldom has breakfast at home my sister has a dog.改成疑问句 my sister has a dog.改成疑问句