到了三伏天，屋子里热得呆不住人，于是便经常在北小院的荫凉处支一张小饭桌，搬几个小板凳，一家人坐在这里吃饭。
O O B-Time I-Time I-Time O B-Location I-Location I-Location O O O O O B-Person O O O O O O O B-Location I-Location I-Location I-Location I-Location I-Location I-Location O O O B-Thing I-Thing I-Thing O O B-Metric I-Metric B-Thing I-Thing I-Thing O B-Person I-Person I-Person O O B-Location I-Location O B-Thing O