因?yàn)閐o 這個(gè)詞（does是第三人稱單數(shù)形式）,大體上從兩方面來講.
1.作為行為動(dòng)詞,跟其他動(dòng)詞一樣,如study,play等.他的意思是“做”等.如：
We usually do our homework in the afternoon.
He does his homework in the evening.
2.作為助動(dòng)詞,也就是幫助主要?jiǎng)釉~構(gòu)成否定和疑問等.
We don't like bananas.
Do you like apples?
Does he like English?
He doesn't like swimming.
上面有一句He does his homework in the evening.要是變成否定句就成了這個(gè)樣子：
He doesn't do his homework in the evening.
這里加上了助動(dòng)詞doesn't,而原來的主動(dòng)詞does變成原形do了.我們老師說不用do(What do they have?)的do，而用does，編成好記的原因，口決(回家作業(yè)可以不用做),求您解答。我才小學(xué)五年級(jí)。(譯林5b第8單元C，D部分)抱歉，我初2了，不知道5b第8單元C，D部分的答案