The present continuous tense 现在进行时基本用法基本用法1.表示现在正在进行的动作和发生的事eg:-What are you doing? -I am reading a book.2.有时表示现阶段正发生的事,但此刻动作不一定正在进行eg:He is teaching at the school. We are learning Unit5 these days.3.现在进行时的句子中常有now,或在句首常出现Look! Listen!等提示词eg:Listen! Danny is singing in the room. He is doing his homework now.结构结构: be+doing ( be要根据主语作人称和数的变化)句型转换句型转换1.肯定句转换成否定句,要在 be 后加 not 构成eg:We are reading English now. We are not reading English now.2.陈述句转换成一般疑问句,把be动词提到句首eg:The student is drinking. Is the stu