Conjugação do verbo inglês
COULD ANTEDATE

Verbo regular: antedate - antedated - antedated

Afirmação

Forma simple	Forma com V-ing
I could antedate you could antedate he could antedate we could antedate you could antedate they could antedate	I could be antedating you could be antedating he could be antedating we could be antedating you could be antedating they could be antedating
Perfeito	Perfeito com V-ing
I could have antedated you could have antedated he could have antedated we could have antedated you could have antedated they could have antedated	I could have been antedating you could have been antedating he could have been antedating we could have been antedating you could have been antedating they could have been antedating

Negação

Forma simple	Forma com V-ing
I couldn't antedate you couldn't antedate he couldn't antedate we couldn't antedate you couldn't antedate they couldn't antedate	I couldn't be antedating you couldn't be antedating he couldn't be antedating we couldn't be antedating you couldn't be antedating they couldn't be antedating
Perfeito	Perfeito com V-ing
I couldn't have antedated you couldn't have antedated he couldn't have antedated we couldn't have antedated you couldn't have antedated they couldn't have antedated	I couldn't have been antedating you couldn't have been antedating he couldn't have been antedating we couldn't have been antedating you couldn't have been antedating they couldn't have been antedating

Forma interrogativa

Forma simple	Forma com V-ing
could I antedate? could you antedate? could he antedate? could we antedate? could you antedate? could they antedate?	could I be antedating? could you be antedating? could he be antedating? could we be antedating? could you be antedating? could they be antedating?
Perfeito	Perfeito com V-ing
could I have antedated? could you have antedated? could he have antedated? could we have antedated? could you have antedated? could they have antedated?	could I have been antedating? could you have been antedating? could he have been antedating? could we have been antedating? could you have been antedating? could they have been antedating?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I antedate? couldn't you antedate? couldn't he antedate? couldn't we antedate? couldn't you antedate? couldn't they antedate?	couldn't I be antedating? couldn't you be antedating? couldn't he be antedating? couldn't we be antedating? couldn't you be antedating? couldn't they be antedating?
Perfeito	Perfeito com V-ing
couldn't I have antedated? couldn't you have antedated? couldn't he have antedated? couldn't we have antedated? couldn't you have antedated? couldn't they have antedated?	couldn't I have been antedating? couldn't you have been antedating? couldn't he have been antedating? couldn't we have been antedating? couldn't you have been antedating? couldn't they have been antedating?