肯定句及祈使句变否定句知识分享

1、精品文档中考句型转换错误分析 肯定句变否定句1. I think she is there.误： I think she isnt there.正： I don t think she is there.析：英语中 think, believe, expect, suppose 等表示信念和揣测的动词， 后接 that 从句时，习惯上将从句中的否定形式转移到主句上， 即否定主句谓语， 不否定从句谓语。2. He can sing this song and that one.误：He cannot sing this song and that one.正； He cannot sing th

2、is song or that one.析：肯定句中的连词 and 在否定句中一般要改为 or 。3. Tom went to school too.误： Tom didnt go to school too.正： Tom didnt go to school either.析： too 和 also 用于肯定句中时，否定句中用 either 替换。4. He has had supper already.误： He hasnt had supper already.正： He hasnt had supper yet.析：随着对谓语动词的否定，某些副词也要作相应的变动。5. He had a

3、 good rest just now.误： He hadnt a good rest just now.正： He didn t have a good rest just now.析：have在表示开会、吃饭、休息、进行体育锻炼等词组中是行为动词， 否定句用助动词来完成。6. Let s do it.误： Let s dont do it.正： Dont let s do it. 或 Lets not do it.析： let 后接的是不带 to 的不定式，变为否定式，直接在句首前加Dont或在不定式前加 not 。7. He always gets there on time.误： He

4、 doesnt always get there on time.正：He never gets there on time.析： He doesnt always get there on time 意为“他并非老是准时到那 儿”，是部分否定，习惯上把句中的副词改为相应的表示否定的副词即可。如：It often rains here. It seldom rains here.8. Be here early tomorrow.误： Be not here early tomorrow.正： Dont be here early tomorrow.析：祈使句的否定，一般在谓语动词前加 do

5、not 的缩写 dont。9. You had better come.误： You didn t have better come.正： You had better not come.析： had better 相当于一情态动词， 不可分割，因此 not 应放在其后。 would rather 也是如此。10. Both Tom and Xiao Ping went to school.误： Both Tom and Xiao Ping didn t go to school.正： Neither Tom nor Xiao Ping went to school.析：一个句子中如果有不定代

6、词 both ， all, every 改为否定式时，要把这 些不定代词改为相应的表示否定的代词。中考句型转换错误分析肯定句变否定句编辑：金子明点击数：1844次录入时间：2008/1/8 14:14:00 我要评论1.1 thi nk she is there.误:I think she isn t there.正：I don t think she is there.析:央语中think,believe, expect, suppose等表示信念和揣测的动词，后接that从句时，习惯上将从句中的否定形式转移到主句上，即否定主句谓语，不 否定从句谓语。2. He can sing this

7、song and that one.误：He cannot sing this song and that one.正； He cannot sing this song or that one.析：肯定句中的连词and在否定句中一般要改为or。3. Tom went to school too.误:Tom didn t go to school too.正：Tom didn t go to school either.析:too和also用于肯疋句中时，否疋句中用 either替换。4. He has had supper already.误:He hasn t had supper alr

8、eady.正：He hasn t had supper yet.析:随着对谓语动词的否定，某些副词也要作相应的变动。5. He had a good rest just now.误：He hadn t a good rest just now.正: He didn t have a good rest just now.析：have在表示开会、吃饭、休息、进行体育锻炼等词组中是行为动词，否定 句用助动词来完成。6. Let s do it.误：Let s don t do it.正：Don t let s do it. 或 Let s not do it.析：let后接的是不带to的不定式，变

9、为否定式，直接在句首前加Don t或在不定式前加not。7. He always gets there on time.误：He doesn t always get there on time.正: He never gets there on time.析：He doesn t always get there on time意为“他并非老是准时到那儿”，是部分否定，习惯上把句中的副词改为相应的表示否定的副词即可。如：It ofte n rains here. It seldom ra ins here.8. Be here early tomorrow.误：Be not here ear

10、ly tomorrow.正: Don t be here early tomorrow.析：祈使句的否定，一般在谓语动词前加do not的缩写don t。9. You had better come.误： You didn t have better come.正: You had better not come.析:had better相当于一情态动词，不可分割，因此not应放在其后。would rather 也是如此。10. Both Tom and Xiao Ping went to school.误：Both Tom and Xiao Ping didn t go to school.

11、正：Neither Tom nor Xiao Ping went to school.析：一个句子中如果有不定代词 both , all, every 改为否定式时，要把这些不 定代词改为相应的表示否定的代词。祈使句如何变为否定句一、一般情况一般说来，祈使句的否定是在祈使句首加Don 如： Come here. Dont come here.不要来这儿。(2) Be angry. Dont be angry.不要生气二、let 型当祈使句表示邀请或建议 (Lets)时，则在Lets与do之间加not。如：(1) Lets talk about it. Lets not talk about it.我们别谈论它吧。(2) Lets