do 可作助动词,没有意义,只以构成时态,也可作实义动词‘做’
如 Do you often go to school on foot ( 这里的DO就是助动词)
He often does his homework in the evening .( 这里的DO 是实义动词,作谓语)
do 可作助动词,没有意义,只以构成时态,也可作实义动词‘做’
如 Do you often go to school on foot ( 这里的DO就是助动词)
He often does his homework in the evening .( 这里的DO 是实义动词,作谓语)