英语语法问题 这句话对么The best friend who could tend to the garden of

who could tend to the garden of my heart better than anyone else in the world
The one could do better than anyone else.
S/he could do beter than others.
这结构是对的.
而,
S/he could do is better than others.

你看看,是不是错的.
The best friend --myself.
The best friend is myself.

---=is
I (the best friend) could tend to my heart better than anyone else in the world.


I soon discovered i have a new best friend , one who could always make me smile and could never disappoint me when the chips were down.
这句,有点不完美了.

I soon discovered I had a new best friend. 是严谨的.
one who could always make me smile and could never dissapoint me when the chips were down 是 a new best friend 的同位语.
因为前文,主句,discovered,是过去时, 当然后面的句子中要保持时态的一致性,句子里的谓语动词应是过去时：

could make me smile when ...were,

恩我觉得这句话肯定是少了谓语的一部分的，因为主语为The best friend， who could tend to the garden of my heart是主语的定语从句，那么谓语部分就缺失啦，因此，应该加上is是正确的。