Although / though he is very busy, （yet） he will come and play footbal with us.
== He will come and play footbal with us though / although he is very busy
1 yet 所在的主句部分通常在从句部分的后面.
2 Although / though 现在可以互换,这个从句部分放在前面或者后面都可以.
让步状语从句,主句yet后置还是前置还是都可以?