Unit 6
How long have you been
collecting shells?
Section B

复习现在完成时have/has+v-ed. In fact ,run out of ,three and a half years 学习3a-4b
时态填空:1.How long _____you___________ (collect) stamps? For half a year.2.How long ____he _________(skate)? Since I _______(be) ten years old.3.When ____he ____(start) learning to dance? In .4.We______________(run) on the playground since 6 o’clock a.m.
have
has
been skating
was
did
start
been collecting
have been running