教你如何让肯定句变否定句、一般疑问句和特殊疑问句
题目
教你如何让肯定句变否定句、一般疑问句和特殊疑问句
答案
例如:I play football. I don't play football. He plays football. He doesn't play football I played football. I didn't play football 如何变一般疑问句:(1)句子中有be, can, will的,把be , can , will 提前,I 通常变成you.例如:He is tall. Is he tall?I can swim. Can you swim?They will go to the park. Will they go to the park? (2) 句子中没有be, can, will的,在句子前面加do, does, did.原形:do;第三人称单数:does; 过去式:did.注意,加上do,does,did 后,动词要用原形.例: I play football. Do you play football? He plays football. Does he play football? I played football. Did you play football?如何变特殊疑问句特殊疑问句 = 特殊疑问词﹢一般疑问句语序.首先要找对特殊疑问词,疑问词有what, when, how, where, how many,how much,what time, how old……其次会变一般疑问句.例如:I get up at 6 o'clock. 划线的如果是6 o'clock.疑问词就用What time,I get up at 6 o'clock. Do you get up at 6 o'clock? 合起来就是What time do you get up?划线部分去掉,不能自问自答.
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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