She is looking at some pictures.
现在进行时的结构是 be+doing,英语语法中没有be+do结构.Are the boy drawing a dog?改错像我刚才讲的，英语语法中没有be+动词原形结构They are have a cake. 首先判断时态，他们正在吃蛋糕。用现在进行时态，结构为be+doing, 所以应改为They are having a cake.现在进行时态变否定句应在be动词后加not而非no，所以第二句改为I am not playing a game.be动词的选择应该根据主语的单复数进行，第三句主语为 the boy，单数，所以be动词应用is，变一般疑问句讲be动词提前，所以第三句改为 Is the boy drawing a dog?The dog is running after the boy. 这句话从语法角度讲没有问题第五句Sarah playing computer games now.还是要看的是进行时态的结构，应该是be+doing，二者缺一不可，所以应该为 Sarah is playing computer games.第六句 I have lunch with my parents.应译为 我正在跟我父母吃午饭，用现在进行时，应该为 I am having lunch with my parents.