Unit 5,There is a big bed,Introduce,There is a sofa in the room,Words,in front of 介词短语，意为“在前面,eg：You are in front of your house. 你就站在房子的前面,小练习： There are some trees_ （在前面）the house,in front of,Words,between btwi:n 作介词，意为“在中间,常用例句： Remember the gaps between the teeth? 记得牙齿间的缝隙吧,小练习： There are flowers_（在之间）the trees,between,Words,above 作介词，意为“在上面，向上面,常用例句： A long scream sounded from somewhere above. 从上面什么地方传来一声长长的尖叫,小练习： There are some birds_（在上面）the trees,above,Translation,Zh
