"he has worked at..."和"he has been worked at.."有什么区别?哪个对呢?

he has worked at...和he has been worked at..有什么区别?哪个对呢? In the past three years ,he ____ very hard at maths. A.works B.worked C.has worked Dis workin he has worked in the factory_____five years ago 1.for 2.at 3.since 4.about He has been worked hard ___his lessons.用at还是in啊? I first met Tony three years ago.He ___ at a bookshop at the time.A.has worked B.was working C.had worked D.is working He has already worked for() hour. He has worked there (s) last year Michael( )in beijing for3 years,he lives in New York at present.A.worked.B.has worked.为什么,还是答案错了 Mr.white works as a journalist at present,but he ___in a high school for several yearsA.has worked B.worked C,had worked D.has been working 请详细说明为什么 ____ that time he has worked as a translator.A since B by C before D at选什么 为什么 my father-------in the factory for thirty years,and now he is at homeworked 可不可以用has worked We were not surprised at ( ),for he had worked so hardA：what has he achieved B：what he had achieved请赐教! he's worked at a hospital since last year.这里的he's 是 he is 还是 he has 还有就是 he is gone 与he has gone 区别是什么啊。 -How long has his father worked in that city?-he has worked there s___ last year. I first met Joe three years ago.He ________ at a CD shop at the time.A:was working B:is working C:has worked D:will work He said he ( ) in that factroy since 1949.A.has worked B.had worked C.worked D.was working i first met Tom 10 years ago.he __in a radio factory at that time?A had worked B has worked Cwas working D has been working选什么啊 为什么啊 She has worked at school s_______ five years ago.