1． How often do you make phone calls to your friend? 你多久和你朋友通一次电话？
1）.How often 多久，多么经常。这是就动作频率提问的疑问副词。其回答通常是once a week, twice a month, three times a day等这样的频度副词。
--How often do you write to your parents? 你多久给你的父母写一次信？
--Once a month. 一月一次。
--How often do they have a sports meeting? 他们多久开一次运动会？
--Twice a year. 一年两次。
2）make phone calls to…给…打电话
关于打电话的表达方式很多，除此之外，还可以用call sb., phone sb., ring sb. up等。
I will call you if he comes. 如果他来，我就给你打电话。
Did you phone Lucy? 你给露西打电话了吗？
He often rings me up late at night. 他经常晚上给我打电话。
