短語詞組短語be not obliged to do 不是一定要做某事be obliged to go 不得不去be obliged to perform 強制執(zhí)行be obliged to sb 感激某人;感謝某人;感謝To be obliged to 非常感激be obliged to someon 因某事感謝某人be obliged to V 不得不be obliged to do 被迫或不得不做某事;被迫做某事be obliged to retreat 不得不退 返回 be obliged to