推荐回答（2个）
1.起渲染作用，意在说明两父子之间的情谊至深，使主题得到深化。
2.对于九十多岁的爷爷，对儿子有两种感情。一种是难割难舍的骨肉情，对儿子的关心于疼爱。虽然爷爷已经九十多岁了，但这种情谊，是一辈子难以割舍的亲情。至于另一个，父亲已经九十多岁了，他需要儿子的疼爱与关心。需要他的呵护于尊敬。
3.意在表达父母与孩子是相依想存的，孩子需要父母的呵护，父母也需要孩子的孝敬和尊敬。
4.你可以去百度查一查。这个我真不知道。
5.人们对于爸爸和爷爷这种父子关系的羡慕，预期是他们岁数这么大了，去依然保持着较好的感情，让人羡慕。第一段
希望能够帮的你，与你好运！
婴儿：人初生 襁褓：0岁 孩提、总角、垂髫：童年 金钗之年：女子12岁 豆蔻之年：女子13岁 及笄之年：女子15岁 弱冠之年：男子20岁 而立之年：30 不惑之年：40 知命之年：50 花甲之年：60 古稀之年：70 喜寿 77岁 耄耋之年：80 米寿 88岁 鲐背之年：90 白寿 99岁 取百去“一”之意 期颐之年：100 部分农村地区在人死亡时称呼年龄 0——20岁为夭折 21——30岁为短寿 31——40岁为强寿 41——50岁为艾寿 51——60岁为周寿 61——70岁为稀寿 71——80岁为耋寿 81——90岁为耄寿 91——100岁为期颐 古时男女称呼年龄是有区别的，一般来讲，男性称X寿，而女性是不称寿的，一般称福。 在云南罗平富乐下菜园村有一块古匾“期颐人瑞”，说的是该村王姓一女老人曾经活到一百多岁，所以有这个称呼。
编辑本段耄
mào <形> (形声。从老,毛声。本义:年老) 同本义。古称大约七十至九十岁的年纪 [octogenarian] 匪我言耄。——《诗·大雅·板》 亦聿既耄。——《诗·大雅·抑》 老夫耄矣,无能为也。——《左传·隐公四年》 又如：耄儿(老人和儿童)；耄年(老年)；耄老(老年、老年人)；耄荒(年老)；耄学(年耄硕学之士)；耄聩(年老糊涂)；耄勤(年老倦勤)；耄期(高年)；耄耋(八十岁的年龄；高龄、高寿)；耄儒(老儒) 年老昏乱 [aged and confused] 耄期倦于勤。——《书·大禹谟》 又如：耄思(思绪纷乱)；耄耄(纷乱貌)；耄乱(谓年老昏乱的人)；耄夫(年老昏庸之人)；耄昏(年老昏愦)；耄聩(年老糊涂)；耄朽(老朽；衰老)；耄衰(衰老)
编辑本段耋
耊 dié <名> (形声。从老、至声。本义：年老。古指七、八十岁的年纪，泛指老年) 同本义 [age over seventy or eighty] 年八十曰耊。字亦作耋。——《说文》 则大耋之嗟。——《易·离》。马注:“七十曰耋。” 使率一二耋老而绥焉。——《公羊传·宣公十二年》 耆耋好礼。——《礼记·射义》 又如:耋老(年老；老年人)；耋吏(老吏)；耋耄(高寿)；耋寿(指高寿的人；老人)；耋耄之年
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