六歲的英文怎麼寫

例句：

I have not spoken since I was six years old.

我從六歲起就不再說話了。

Six years old: My dad is smarter than your dad.

當我六歲的時候：我爸爸比你爸爸聰明。

I learn to ride bikes when I was six years old.

在我六歲的時候我就開始學習騎自行車。

The first time I saw the sea in my six years old.

第一次看見大海，是在我六歲那年。

Most children do until they're five or six years old.

很多孩子都會這樣知道他們是5歲或者六歲。