from then on after that since then from now on

问题描述:

from then on after that since then from now on
希望有易懂点的.最好有一般和什么时态连用,放句子什么部位.

from then on用完成时
after that 用完成时 过去时
since then 和上面一样
from now on 用将来时
这些都是放句子句首或者句尾,.