中考英语句型转换错误分析 肯定句变否定句

　　1. I think she is there.

　　误：I think she isnt there.

　　正：I dont 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 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 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 good rest just now.

　　误：He hadnt a good rest just now.

　　正：He didnt 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. Lets do it.

　　误：Lets dont do it.

　　正：Dont lets 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 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 not的缩写dont。

　　9. You had better come.

　　误：You didnt 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 didnt go to school.

　　正：Neither Tom nor Xiao Ping went to school.