现在完成进行时的句子

All these years they have been contributing articles to our magazine.

这些年来,他们一直为我们杂志写稿.

She has been writing the letter since four o”clock in the afternoon.

从下午四点钟到现在,她一直在写信.

We have been studying in this school for three years.

我们一直在这所学校学习了三年.

How long have you been watching TV?

你看了多久电视了?

We have been seeing quite a lot of each other recently.

最近我们常常见面.