I could paraphrase you could paraphrase she could paraphrase we could paraphrase you could paraphrase they could paraphrase
V-ing form
I could be paraphrasing you could be paraphrasing she could be paraphrasing we could be paraphrasing you could be paraphrasing they could be paraphrasing
Perfect
I could have paraphrased you could have paraphrased she could have paraphrased we could have paraphrased you could have paraphrased they could have paraphrased
V-ing perfect
I could have been paraphrasing you could have been paraphrasing she could have been paraphrasing we could have been paraphrasing you could have been paraphrasing they could have been paraphrasing
Negation
Simple form
I couldn't paraphrase you couldn't paraphrase she couldn't paraphrase we couldn't paraphrase you couldn't paraphrase they couldn't paraphrase
V-ing form
I couldn't be paraphrasing you couldn't be paraphrasing she couldn't be paraphrasing we couldn't be paraphrasing you couldn't be paraphrasing they couldn't be paraphrasing
Perfect
I couldn't have paraphrased you couldn't have paraphrased she couldn't have paraphrased we couldn't have paraphrased you couldn't have paraphrased they couldn't have paraphrased
V-ing perfect
I couldn't have been paraphrasing you couldn't have been paraphrasing she couldn't have been paraphrasing we couldn't have been paraphrasing you couldn't have been paraphrasing they couldn't have been paraphrasing
Interrogative form
Simple form
could I paraphrase? could you paraphrase? could she paraphrase? could we paraphrase? could you paraphrase? could they paraphrase?
V-ing form
could I be paraphrasing? could you be paraphrasing? could she be paraphrasing? could we be paraphrasing? could you be paraphrasing? could they be paraphrasing?
Perfect
could I have paraphrased? could you have paraphrased? could she have paraphrased? could we have paraphrased? could you have paraphrased? could they have paraphrased?
V-ing perfect
could I have been paraphrasing? could you have been paraphrasing? could she have been paraphrasing? could we have been paraphrasing? could you have been paraphrasing? could they have been paraphrasing?
Interro-negative form
Simple form
couldn't I paraphrase? couldn't you paraphrase? couldn't she paraphrase? couldn't we paraphrase? couldn't you paraphrase? couldn't they paraphrase?
V-ing form
couldn't I be paraphrasing? couldn't you be paraphrasing? couldn't she be paraphrasing? couldn't we be paraphrasing? couldn't you be paraphrasing? couldn't they be paraphrasing?
Perfect
couldn't I have paraphrased? couldn't you have paraphrased? couldn't she have paraphrased? couldn't we have paraphrased? couldn't you have paraphrased? couldn't they have paraphrased?
V-ing perfect
couldn't I have been paraphrasing? couldn't you have been paraphrasing? couldn't she have been paraphrasing? couldn't we have been paraphrasing? couldn't you have been paraphrasing? couldn't they have been paraphrasing?