4. 归纳同音异形异义词，如：

new ― knew; weather ― whether; nose ― knows; pair ― pear; father ― farther; blue ― blew; I ― eye; here ― hear; hour ― our; past ― passed; see ― sea; right ― write; whole ― hole; won ― one; meet ― meat; week ― weak; would ― wood; aren’t ― aunt; son ― sun; know ― no; to ― too ― two; buy ― by ― bye