think Posted on By Think can mean ‘have an opinion’. In this meaning, it is not used in progressive tenses. I don’t think much of his latest book. Who do you think will win the election? When think has other meanings (for example plan, or consider) progressive tenses are possible. I’m thinking of changing my job. What are you thinking about? When think is used to introduce a negative idea, we usually construct the sentence I do not think . . ., not I think . . . not .. . I don’t think it will rain. Mary doesn’t think she can come.