他一定会来。
tā yīdìng huì lái
He will definitely come.
我一定去。
wǒ yīdìng qù
I'll definitely go.
有一定的问题。
yǒu yīdìng de wèntí
There are certain problems.
一定的程度
yīdìng de chéngdù
A certain degree
