
Regular verb: astonish - astonished - astonished
Simple form | V-ing form | 
| I must astonish you must astonish she must astonish we must astonish you must astonish they must astonish  | I must be astonishing you must be astonishing she must be astonishing we must be astonishing you must be astonishing they must be astonishing  | 
Perfect | V-ing perfect | 
| I must have astonished you must have astonished she must have astonished we must have astonished you must have astonished they must have astonished  | I must have been astonishing you must have been astonishing she must have been astonishing we must have been astonishing you must have been astonishing they must have been astonishing  | 
Simple form | V-ing form | 
| I mustn't astonish you mustn't astonish she mustn't astonish we mustn't astonish you mustn't astonish they mustn't astonish  | I mustn't be astonishing you mustn't be astonishing she mustn't be astonishing we mustn't be astonishing you mustn't be astonishing they mustn't be astonishing  | 
Perfect | V-ing perfect | 
| I mustn't have astonished you mustn't have astonished she mustn't have astonished we mustn't have astonished you mustn't have astonished they mustn't have astonished  | I mustn't have been astonishing you mustn't have been astonishing she mustn't have been astonishing we mustn't have been astonishing you mustn't have been astonishing they mustn't have been astonishing  | 
Simple form | V-ing form | 
| must I astonish? must you astonish? must she astonish? must we astonish? must you astonish? must they astonish?  | must I be astonishing? must you be astonishing? must she be astonishing? must we be astonishing? must you be astonishing? must they be astonishing?  | 
Perfect | V-ing perfect | 
| must I have astonished? must you have astonished? must she have astonished? must we have astonished? must you have astonished? must they have astonished?  | must I have been astonishing? must you have been astonishing? must she have been astonishing? must we have been astonishing? must you have been astonishing? must they have been astonishing?  | 
Simple form | V-ing form | 
| mustn't I astonish? mustn't you astonish? mustn't she astonish? mustn't we astonish? mustn't you astonish? mustn't they astonish?  | mustn't I be astonishing? mustn't you be astonishing? mustn't she be astonishing? mustn't we be astonishing? mustn't you be astonishing? mustn't they be astonishing?  | 
Perfect | V-ing perfect | 
| mustn't I have astonished? mustn't you have astonished? mustn't she have astonished? mustn't we have astonished? mustn't you have astonished? mustn't they have astonished?  | mustn't I have been astonishing? mustn't you have been astonishing? mustn't she have been astonishing? mustn't we have been astonishing? mustn't you have been astonishing? mustn't they have been astonishing?  |