英语改错题～～～

Please tell him not to be late for school.

这个是祈使句！tell sb to do, tell sb. not to do.

don't改成not或者删去to.
Please这句为祈使句.
前一种改法的根据是tell sb. to do sth.
后一种改法的根据是don't后面这句为从句.

don't改成not
tell sb. not to do sth这是固定的句型

Please tell him not to be late for school.

don't 改为 not