angel小芋头
my hometowm yunyang is a samll beautifull city,she is situated on the bank of changjiang river .the city knows as "world ladder city" because she possess a longest ladder in the world.the longest ladder was built from the foot of the hill to a historic site named mopanzhai which situated on the top of the hill.yuyang is beautiful,there are so many parks and greenbelts among here.the specialty of yunyang is taopiangao,and it is very delicious,yunyang is rich in citrus fruits too.besides mopanzhai,there are many other historic sites here.like zhangfei temple,qixia temple and etc.there are also a lot of natural sceneries like tianxiadiyigang-longgang,longjiling park.有道词典翻的，看在我那么辛苦的份上，给个分呗。
cocomooner
两个都正确要看用在哪里方面。
1、in the river，在河里，是指在河水中，如鱼、沉船等，尤其注意在河里游泳也是用in the river。
2、on the river，在河上，是指在水面上，如船只、水坝、漂浮物等。此外还可以指在河岸边上，如村庄、市镇等。
例句：
On hot days we often bathe/go bathing in the river.天热时我们常在河里[去河里]游泳。
They were standing in the river spearing fish.他们站在河里叉鱼。
Her sisters ducked her in the river.她的姐妹把她按到河里。
Her hat flew off and landed up in the river.她的帽子让风刮跑落到河里了。
Some people just dump their rubbish in the river.有些人径直往河里倒垃圾。
We heard wild duck quacking on the river.
我们听到野鸭子在河上呱呱叫。
The river had been bridged with slabs of rock.
用石板在河上架了桥。
