英语现在进行时,一般现在时,一般过去时,现在完成时,过去进行时的结构 注意.我要的是；主语+动词ING形+谓语这种表达方式,再加个例句

现在进行时：主语+am/is/are +动词ing形式构成.
一般现在时：主+BE动词（am, is, are）+表语或主语+动词原形+其它
一般过去时：主语+动词的过去式+宾语+其他结构
现在完成时主语：主语＋have/has+过去分词
过去进行时：主语+助动词was/were + 现在分词多点啊~~例句分别是：They are playing basketball now.现在他们正在打篮球。The teacher is not in the classroom and the students are very noisy.老师不在教室，学生都很吵闹。The children had a good time in the park.孩子们在公园里玩的很开心。I have just turned off the light. 我刚刚把灯关上。I was doing my homework at 9 p.m. last Sunday.上个星期天九点钟我正在做作业。