以clean为例 (三单+ses)
I clean we clean
you clean you clean + the classroom.
hesheit cleans they clean
疑问句
Do you(we,they,I) clean the classroom?
Does he(she,) clean the classroom?
以clean为例 (三单+ses)
I clean we clean
you clean you clean + the classroom.
hesheit cleans they clean
疑问句
Do you(we,they,I) clean the classroom?
Does he(she,) clean the classroom?