母亲爱吃鱼，每逢下暴雨，小河涨水，市场上就有许多鱼卖，母亲就会去买鱼。
B-Person I-Person O O B-Thing O B-Time I-Time I-Time B-Thing I-Thing O B-Thing I-Thing O B-Thing O B-Location I-Location I-Location O O O O B-Thing O O B-Person I-Person O O O O B-Thing O