爷爷的英文：
(informal) father's father; paternal grandfather

参考例句：

Grandpa loves to go angling.
爷爷喜爱钓鱼。

Grandpapa says it is a panacea."
爷爷说那是一种万灵药。”

Be a monster,grandfather!
爷爷，你装个妖怪！

Grandfather is in his anecdotage
爷爷年老话多，爱谈往事。

I love you, Grandpa.
我爱你， 爷爷。

Grandpa, get the net, please!
爷爷 ，请把网子拿来！

Ling Ling is the apple of her grandpa's eye
玲玲是她爷爷的掌上明珠

The whole family celebrated grandpa's birthday in high glee.
全家人欢天喜地给爷爷过生日。

Grandad usually conks out ( ie sleeps ) for an hour or so after lunch
爷爷吃过午饭往

Grandad is very particular about his food.
爷爷吃饭很挑剔。

informal是什么意思：
adj. 非正式的；口语体的，通俗的；不拘礼节的

Informed judgement.
有事实根据的判断。

This is an informal expression.
这是一种非正式表达法。

This is an informal word.
这是一种口语用语。

father是什么意思：
n. 父亲；先辈；创始人；神父
v. 成为父亲

Pilgrim Fathers
ph.1. (英国1620年前到达北美洲的)清教徒前辈移民

Einstein fathered relativity.
爱因斯坦创立了相对论。

My father was a man of determination.
我父亲是一个果断的人。

paternal是什么意思：
adj. 父亲（般）的；得自父亲的；父系的

Such programs are often mistaken for corporate paternalism.
这种做法常常被误解为公司的温情主义。

Everyone has two paternal grandparents and two maternal grandparents.
每个人都有两个属于父系的祖父母和母系的祖父母。

The time has come to turn away from the condescending policies of paternalism
如今已到了扬弃那种家长制的降格相求政策的时刻。