fishmoon00
当两个名词放在一起，要表示复数的时候，我们只把后面的名词变成复数，如bus drivers 公共汽车司机，factory workers 工厂工人。但是man、woman这两个词放在名词的前面时，要表示复数时，man和woman也要变成复数形式，如women cooks 女厨师，women astronauts 女宇航员，women drivers 女司机，men cooks 男厨师，men drivers 男司机。
Cupnightsky
例如:① These are women teachers.这些是女教师。② There are many clothes shops in our city.我们所在的城市有很多服装店。
忘心敛意
There are many needy families in our village.我们村子有很多贫困家庭。There are many cedars in this park.这个公园里有许多香柏。There are rows of tents at the foot of the mountain.山脚下有几排帐篷。I guess there are mice in the kitchen.我猜想厨房里有老鼠。There are 30 pupils in the class.这个班有30名学生。There are 300 students or so in this middle school.这所中学大约有300个学生。On the average, there are 300 tourists a week.每星期平均有300游客。There are more than 5,000 adjectives in that dictionary.那本词典中有5000多个形容词There are lots of trees in the yard.There are lots of dogs in the yard.There are lots of cats in the yard. There are lots of cars in the yard. There are lots of cupsin the yard. There are Few students in the classroom.There are thirty desks and chairs in it.There are four seasons in a year,and spring is the best one.PS：自己再把这些句子改为一般疑问句和否定句吧，应该足够50句了。
