ive been是什么时态
ive been是现在完成时。
Ive been writing letters since breakfast.
早饭后我一直在写信。
It feels like spring Ive been here before.
感觉好象春天到了我以前来过这。
And Ive been thinking about ita lot lately.
最近我一直就此事想了很多。
Ive been knocking. I dont think anybody s in.
我敲了五次门。我想屋里没有人。
Ive been looking forward to visiting your factory.
我一直都盼望着参观贵厂。