 
  
 I. must [mʌst] 动词 助动词
II. must [mʌst] 名词 no pl
must 名词
-  must
-  
-  must
-  
I. must-ˈhave 俗 名词
must-ˈsee 形
must-see TV, film:
-  must-see
-  
| I | must | 
|---|---|
| you | must | 
| he/she/it | must | 
| we | must | 
| you | must | 
| they | must | 
| I | had to | 
|---|---|
| you | had to | 
| he/she/it | had to | 
| we | had to | 
| you | had to | 
| they | had to | 
| I | have | had to | 
|---|---|---|
| you | have | had to | 
| he/she/it | has | had to | 
| we | have | had to | 
| you | have | had to | 
| they | have | had to | 
| I | had | had to | 
|---|---|---|
| you | had | had to | 
| he/she/it | had | had to | 
| we | had | had to | 
| you | had | had to | 
| they | had | had to | 
 
  
 