写出下列动词的三种形式

例：do does doing did

1 learn

2 start

3 stop

4 become

5 go

6 study

7 win

8 play

9 have

10 see

1 learn ,learns,learning,learned

2 start,starts,starting,started

3 stop,stops,stoping,stoped

4 become ,becomes,becoming,becomed

5 go,goes,going,went

6 study ,studies,studying,studied

7 win,wins,winning,won

8 play ,plays,playing,played

9 have,has,having,had

10 see,sees,seeing,saw

1 learn learns learning learned

2 start starts starting started

3 stop stops stopping stopped

4 become becomes becoming became

5 go goes going went

6 study studies studying studied

7 win wins winning won

8 play plays playing played

9 have has having had

10 see sees seeing saw

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