1、含有
助动词did、do、does的把他们和not一起去掉即可,如果是didn't,动词要改为
过去式,如果是doesn’t,动词改为第三人称单数形式。
例如:He doesn’t like eating chicken.
—He likes eating chicken.
He didn’t know the thing.
—- He knew the thing.
2、含有can、could、may、might、should、will、would、have、had、has、is、am、are的否定句,变肯定句的时候,把not直接去掉即可。
例如:We can’t wait .—We can wait.
He hasn’t been there.—-He has been there.