must rain
Verbo regular: rain - rained- rained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
-
-
it must rain
-
-
- 	-
-
it must be raining
-
-
- 	-
-
it must have rained
-
-
- 	-
-
it must have been raining
-
-
- 	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
-
-
it mustn't rain
-
-
- 	-
-
it mustn't be raining
-
-
- 	-
-
it mustn't have rained
-
-
- 	-
-
it mustn't have been raining
-
-
- 	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
-
-
must it rain?
-
-
- 	-
-
must it be raining?
-
-
- 	-
-
must it have rained?
-
-
- 	-
-
must it have been raining?
-
-
- 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
-
-
mustn't it rain?
-
-
- 	-
-
mustn't it be raining?
-
-
- 	-
-
mustn't it have rained?
-
-
- 	-
-
mustn't it have been raining?
-
-
-