I must crawl you must crawl she must crawl we must crawl you must crawl they must crawl
Forma con V-ing
I must be crawling you must be crawling she must be crawling we must be crawling you must be crawling they must be crawling
Perfecto
I must have crawled you must have crawled she must have crawled we must have crawled you must have crawled they must have crawled
Perfecto con V-ing
I must have been crawling you must have been crawling she must have been crawling we must have been crawling you must have been crawling they must have been crawling
Negación
Forma simple
I mustn't crawl you mustn't crawl she mustn't crawl we mustn't crawl you mustn't crawl they mustn't crawl
Forma con V-ing
I mustn't be crawling you mustn't be crawling she mustn't be crawling we mustn't be crawling you mustn't be crawling they mustn't be crawling
Perfecto
I mustn't have crawled you mustn't have crawled she mustn't have crawled we mustn't have crawled you mustn't have crawled they mustn't have crawled
Perfecto con V-ing
I mustn't have been crawling you mustn't have been crawling she mustn't have been crawling we mustn't have been crawling you mustn't have been crawling they mustn't have been crawling
Forma interrogativa
Forma simple
must I crawl? must you crawl? must she crawl? must we crawl? must you crawl? must they crawl?
Forma con V-ing
must I be crawling? must you be crawling? must she be crawling? must we be crawling? must you be crawling? must they be crawling?
Perfecto
must I have crawled? must you have crawled? must she have crawled? must we have crawled? must you have crawled? must they have crawled?
Perfecto con V-ing
must I have been crawling? must you have been crawling? must she have been crawling? must we have been crawling? must you have been crawling? must they have been crawling?
Forma interro-negativa
Forma simple
mustn't I crawl? mustn't you crawl? mustn't she crawl? mustn't we crawl? mustn't you crawl? mustn't they crawl?
Forma con V-ing
mustn't I be crawling? mustn't you be crawling? mustn't she be crawling? mustn't we be crawling? mustn't you be crawling? mustn't they be crawling?
Perfecto
mustn't I have crawled? mustn't you have crawled? mustn't she have crawled? mustn't we have crawled? mustn't you have crawled? mustn't they have crawled?
Perfecto con V-ing
mustn't I have been crawling? mustn't you have been crawling? mustn't she have been crawling? mustn't we have been crawling? mustn't you have been crawling? mustn't they have been crawling?