Question

现在完成时和过去式I have finish my homeworkI was finish my homework时态

Answer 1

首先,你的写法有些错误,应该是I have finished my homework和I finished my homework

然后,现在完成时的突出特点在于是发生了对现在有影响的动作,而过去式只是说明发生了这个动作,要看语境的,比如,我要强调我因为做完作业了所以可以出去玩,那就得用完成时