必有-必

必有

biˋ youˇ

Must have | Must have been

必有 | 必有

想必有

xiangˇ biˋ youˇ

Think it must have been | Thinks it must have been | Thinking it must have been | Thought it must have been | Must have been

想必 | 必有 | 必有

是必有的

shiˋ biˋ youˇ de˙

Is a must | Was a must | Was needed

是 | 必有 | 有的 | 有的