YOU SAID:
my grandfather is always asleep, he is boring
INTO JAPANESE
私の祖父はいつも眠っていて退屈です
BACK INTO ENGLISH
my grandfather is always asleep and bored
INTO JAPANESE
私の祖父はいつも眠っていて退屈しています
BACK INTO ENGLISH
my grandfather is always asleep and bored
That didn't even make that much sense in English.