一、肯定句改否定句
1、be动词后加not,诸如:is not(isn't), are not(aren't), was not(wasn't), were not(weren't), am not(无缩写)。
◆ He is a student. 他是一个学生。--- He is not a student. 他不是一个学生。
◆ They were watching TV then. 那时他们正在看电视。--- They weren't watching TV then. 那时他们没在看电视。
2、情态动词等后加not,诸如:can not(can't), will not(won't),should not(shouldn't),must not(mustn't),need(needn't)等。
◆ She can take care of herself. 她能照顾好她自己。--- She can not(can't) take care of herself. 她不能照顾好她自己。
◆ You should go home. 你应该回家。--- You shouldn't go home. 你不应该回家。
3、若无法找到be动词或情态动词,就在已有动词前额外加助动词否定形式:don't/doesn't/didn't,同时将动词变原形。
◆ She likes the room. 她喜欢这房间。--- She doesn't like the room. 她不喜欢这房间。
◆ We did our homework yesterday. 我们昨天做了作业。--- We didn't do our homework yesterday. 我们昨天没有做作业。
注:句中若有some ,须将其改成any。
◆ I want some books. 我想要一些书。--- I don't want any books. 我不想要任何书。
◆ There is some water in the cup. 杯子里有一些水。--- There isn't any water in the cup. 杯子里没有水了。
二、肯定句改一般疑问句(三步法)
#1:把be动词(am/is/are...)或情态动词(can/will...)放在句首。若句中没有上述动词,就把助动词放在句首(do/does/did),同时将动词变原形。
#2:剩余部分照写。注:some须改成any,I或we均改成you,my或our均改成your。
#3:句点改成问号。
◆ I can swim. 我会游泳。Can you swim? 你会游泳吗? ◆ There is some water in the cup. 杯子里有一些水。Is there any water in the cup. 杯子里有水吗?
◆ I studied hard. 我学习认真。Did you study hard? 你学习认真吗?
三、肯定句改特殊疑问句(四步法 )
#1:在一般疑问句基础上,句首添加一个疑问词即可,但应根据划线部分选用适配的疑问词。
#2:把be动词或情态动词等放在疑问词后面,若句中没有上述动词,就用助动词替代(do/does/did)。注:Whose(谁的)和
How many(多少)两词除外,须紧跟物品,再写be动词或情态动词等。
#3:划线部分去掉后剩下的内容照写。注:some须改成any,I或we均改成you,my或our均改成your。
#4:句点改成问号。
★ 考试中出现频率颇高的20个特殊疑问句 1、划线部分是“事或物”,疑问词用What。
◆ This is a book. 这是一本书。--- What is this? 这是什么? ◆ I often play football on Saturdays. 我经常在周六踢足球。--- What do you often do on Saturdays? 你经常在周六做什么?
2、划线部分是“职业”,疑问词用What。
◆ Mike is a worker. 迈克是一个工人。--- What is Mike? 迈克是做什么的?
◆ I'm a policeman. 我是一名警察。--- What do you do? 你是做什么的?
3、划线部分为“人名”,疑问词用What。
My name is Amy. 我叫艾米。 --- What's your name? 你叫什么名字?
4、划线部分为“天气”,疑问词用What或How。
It's cold and windy in winter. 冬天很冷,而且风大。--- What's the weather like in winter? 冬天的天气怎么样?(= How is the weather in winter in Beijing?)
5、划线部分是“颜色”,疑问词用What colour。
My hat is blue. 我的帽子是蓝色的。--- What colour is your hat?你的帽子是什么颜色?
6、划线部分是“星期几”,疑问词用What day。
It's Monday. 今天星期一。--- What day is today? 今天星期几?
7、划线部分是“时间”,疑问词用What time或When。 ◆ It's seven twenty. 现在七点二十。--- What time is it? 现在几点了?
◆ I usually get up at six. 我通常六点起床。 --- When do you usually get up? 你通常什么时候起床?
8、划线部分是“人”,疑问词用Who。
He is my brother. 他是我哥哥。 --- Who is he? 他是谁?
9、划线部分是“形容词性物主代词或名词性物主代词”,疑问词用Whose。
This is my bag.(= This bag is mine.)这是我的包。--- Whose bag is this? 这是谁的包?
10、划线部分是“原因”,疑问词用Why。
He isn't at school because he is ill. 他因为生病而没去学校。--- Why isn't he at school? 他为什么不在学校?
11、划线部分是“地点”,疑问词用Where。
The box is on the desk. 这盒子在桌上。--- Where is the box? 盒子在哪里?
12、划线部分是“方式”,疑问词用How。
She usually goes to school by bike. 她通常骑自行车去上学。--- How does she go to school? 她是怎样去上学的?
13、划线部分是“年龄”,疑问词用How old。
I'm twelve. 我十二岁。 --- How old are you? 你多大了?
14、划线部分是“数量”,疑问词用How many或How much。 ◆ I can see five kites. 我能看到五只风筝。--- How many kites can you see? 你能看见几只风筝?
◆ There is some milk in the glass. 杯里有一些牛奶。--- How much milk is there in the glass? 杯里有多少牛奶?
15、划线部分是“多少钱”,疑问词用How much。
This pen is nine yuan. 这笔价格九元。--- How much is this pen? 这笔多少钱?
16、划线部分是“距离”,疑问词用How far。
It's ten minutes' walk. 步行十分钟的路程。--- How far is it? 到那有多远?
17、划线部分是“长度”,疑问句用How long。
The river is about 500 km. 这条河长约500千米。--- How long is the river? 这条河有多长?
18、划线部分是“频率”,疑问词用How often。
I watch TV twice a week. 我一星期看两次电视。 --- How often do you watch TV? 你每多久看一次电视?
19、划线部分是“时长”,疑问词用How long或How soon。 ◆ I will stay there two weeks. 我将会在那儿呆两个星期。--- How long will you stay there? 你将在那儿呆多久?
◆ He will come back in an hour. 他一小时后回来。--- How soon will he come back? 他过多久回来?
20、划线部分是“次数”,疑问词用How many times。 He called me twice yesterday. 他昨天给我打了两次电话。--- How many times did he call you yesterday? 他昨天给你打了几次电话?
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