以单宾及物动词finish来学习谓语和非谓语
谓语/系动词谓语
主动
（执行者在动词前，承受者在动词后）
一般现在时：finish，finishes，am/is，are
一般过去时：finished，was，were
一般将来时：will finish，shall finish
一般过去将来时：would finish，should finish

现在进行时：am/ is finishing，are finishing
过去进行时：was finishing，were finishing
将来进行时：will be finishing，shall be finishing
过去将来时：would be finishing，should be finishing

现在完成时：have/has finished
过去完成时：had finished
将来完成时：will have finished，shall have finished
过去将来完成时：would have finished，should have finished

现在完成进行时：have/has been finishing
过去完成进行时：had been finishing
将来完成进行时：will/shall have been finishing
过去将来完成进行时：would/should have been finishing