she went to the park一般现在时：she goes to the park现在进行时：she is going to the park一般将来时：she will go to the park现在完成时：she has gone to the parkwe are swimming一般过去时：we swam一般现...一般现在时：james does his homework
现在进行时：james is doing his homework
一般将来时：james will do his homework
现在完成时：james has done his homework
一般过去时：james did his homework