I do a part-time job on weekends.(画线部分do a part-time job on weekends)
What do you do on weekends?(第一个do是助动词,无实际意义,第二个do是“做”的意思)
I am doing my homework.(画线部分am doing my homework)
What are you doing?(这里依然有be动词,因为现在进行时的构成是:主语+am/is/are+现在分词)
I do a part-time job on weekends.(画线部分do a part-time job on weekends)
What do you do on weekends?(第一个do是助动词,无实际意义,第二个do是“做”的意思)
I am doing my homework.(画线部分am doing my homework)
What are you doing?(这里依然有be动词,因为现在进行时的构成是:主语+am/is/are+现在分词)