have been working 是什么时态

have been working 是什么时态 I/we should have been working.是什么意思 Have been working for several years I have been working for two days. i have been working lots as Because i have been working Because i have been working hard have been working与have worked的区别 have worked 和 have been working有什么区别 must have working hard与must have been working hard的区别 Perseveringly though they have been working for months, Have you been working here long?long是什么词性. You d____ this reward as you have been working hard. I have been working here for 7 years.改为同义句怎摸说形如I have been working here— — — I have been working hard all morning有没有什么语法错误有have been working这种说法吗 He is said to have been working in that factory for twelve years.这里动词不定式是作状语吗? He is said to have been working in that factory for twelve years.这里动词不定式是作状语吗? They have been working in the garden all afternoon.(现在是下午还是过了下午?怎么判断的?) .“Perhaps she is working for John.” “Yes,she ______ for him.”A.need have been workingB.ought be workingC.may be working D.ought have been working