用三种时态造一篇有关环境的作文，现在完成时，一般过去时，一般将来时

16个时态：一般现在时 I am a student. 我是一个学生。 现在进行时 She is eating. 她在吃东西。 现在完成时 I have studied English hard. 我努力学习英语。（造成的影响是“我现在英语好”） 现在完成进行时 My mother has been doing some reading for an hour. 我的妈妈已经读了一个小时的书了。（现在还在读） 一般过去时 Li Ming was a teacher in 2002. 李明在2002年是一个老师。 过去进行时 I was watching TV last night. 昨晚我在看电视。 过去完成时 By the time I got up,my mother had been away from home. 我起床时我妈妈已经离开家。（我起床的动作发生在过去，已经过了，我妈在我起床之前就离开家，即离开的动作是在过去的过去） 过去完成进行时 I had been doing homework for an hour when my mother went home that day. 那天当我妈回家时我已经做了一小时的作业。（表示那天我从一个小时之前开始做，一直做到那天我妈回家时，可能还要继续做） 一般将来时 You will be my housewife. 你将成为我的妻子。 将来进行时 I shall(will) be cooking for you this time tomorrow. 明天的这时我将在为你做饭。 将来完成时 My boss will have arrived this time tomorrow. 我的老板在明天这时将已经到达了。 将来完成进行时 By the time you will get to my home in four hours, shall have been working for three hours. 你四个小时后到我家时，我将已经工作了三个小时。 过去将来时态都由将来完成时的基础上加上一句“从过去的角度看”或者“从过去的角度推断”，翻译上大体和将来时态一致。 （一般）过去将来时 By the time you arrived the next day, she would have been typing for hours. 过去将来进行时 They said they would be coming. 过去将来完成时 When we goton the railway station, the train would probably have left. 过去将来完成进行时 Mr. Jackson decided to return to London next month. By that time he would have been working with us here for six years.