yes—no, this—that, these—those, here—there, go—come, open—close, big—small, fat—thin, tall—short, long—short, black—white, happy—sad, hot—cold, cool—warm, soft—hard, on—under, in front of—behind, in—out, boy—girl, man—woman, wrong—right, down—up, sit—stand, easy—difficult, take off(脱下) —put on(穿上)