Reviewauxiliaryverbs：do/does（助动词）Whenyouaretalkingaboutsingular（单数）,thirdperson–he,she,it,Jack,Jane,thecar–youuse‘does’?.example–JackdoeshishomeworkeverydayInallothercases(其他情况）youwoulduse‘do’–examplewhenyouaretalkingabout‘I,you,we,they,these,tho