小升初专项：陈述句变否定句

1 陈述句变否定句陈述句变否定句 陈述句陈述句 是用来陈述一件事情或表示一种看法 可分为肯定句 和否定句两种形式 一 变否定句 1 当谓语动词是 be 动词 am is are 或者过去时 was were 时 直接在这些词后面加 not 构成否定形式 即 am not is not isn t are not aren t 如果句子里有 some 在否定句中 要变成 any and 变成 or Eg She is a beautiful girl 改为否定句 She isn t a beautiful girl There are some students in Sun school 改为否定句 There aren t any students in Sun school 2 当句子中谓语动词是助动词 will 情态动词 can could should must 等时 直接在助动词和情态动词后加 not 变为否定句 注意 will not won t can not can t must not mustn t 表示禁 止 如果句子里有 some 在否定句中要变成 any and 变成 or Eg My family will go to Beijing and Qingdao next Sunday 改为 否定句 2 My family will not go to Beijing or Qingdao next Sunday They can run very fast 改为否定句 They can t run very fast 3 Eg 谓语动词是行为动词而又没有助动词或情态动词时 必须 在谓语动词前加助动词 一般现在时加助动词 do 第三人 称单数加 does 一般过去时加 did 再和 not 构成否定结构 don t doesn t didn t 后都用动词原形 如果句子里有 some 在否定句中要变成 any and 变成 or Eg Tom flies kites in the playground 改为否定句 Tom doesn t fly kites in the playground We often play football after class 改为否定句 We don t often play football after class 练习练习 1 Mike is a student at Sun school 改为否定句 Mike a student at Sun school 2 There are some apple juice in the fridge 改为否定句 There apple juice in the fridge 3 3 I am happy and excited to hear that good news 改为否定句 I am happy excited to hear that good news 4 She will go swimming next week 改为否定句 She go swimming next week 5 My parents can cook meat with potatoes 改为否定句 My parents cook meat with potatoes 6 You must do your homework now 改为否定句 You do your home work now 7 Jill has lunch at school every day 改为否定句 Jill lunch at school every day 8 The children had a good time at the party 改为否定句 The children a good time at the party 9 Rose didn t watch TV this morning 改为肯定句 Rose this morning 10 She does exercises at home in the evening 改成否定句 4 She exercises at home in the evening 11 He said something important at the meeting 改为否定句 He important at the meeting 12 He reads English every morning He English every morning 13 They can swim across the river They swim across the river 14 I have some bread to eat I bread to eat 15 They are playing bas