改否定句1 He has seen the film twice2 I will go to the park this
改否定句 1 He has seen the film twice 2 I will go to the park this weekend 3 You'd better go to see the doctor 4 Betty used to somke 5 l saw something strange in his new picture
1 He hasn't seen the film twice 2 I will not go to the park this weekend 3 You'd better not go to see the doctor 4 Betty didn't somke 5 l saw nothing strange in his new picture