如何将I think I will learn English hard.改为双重否定句

如何将I think I will learn English hard.改为双重否定句 请问如何将'' I think it is hard to learn English well '改为否定句. I think we will have an english exam next week（改为否定句） 将 I think people here will know you.(改为否定句) i think english is diffcult [改为否定句 改为否定句,I think there will be more people I think there will be less pollution.(改为否定句) I think that everyone will use computer.(改为否定句) I think he will be a doctor.改为否定句 I think you will need some money.(改为否定句) I think that everyone will use computer 改为否定句 I think it will rain this evening.改为否定句