looking for sb.sb.应用单数还是复数?

looking for sb.sb.应用单数还是复数? sb with sb 是复数还是单数. sb.with sb.+单数还是复数? 主语是sb.with sb.这是单数还是复数 sb's and sb's 与sb and sb's的区别,他们后面的名词用单数还是复数? sb'family 作主语时,谓语用单数还是复数 bring sth to sb 还是for sb be rude to sb还是for sb express sth for sb 还是to sb be important to sb还是for sb be embarrassing to sb还是for sb? sth to sb 还是 sth for sb