| 1. | As they walked along , the students sang happily
学生们一边走一边高兴地唱歌。 |
| 2. | The students are singing happily in the classroom
学生们在教室里快乐地唱歌。 |
| 3. | The birds are singing happily in the trees
鸟儿在树上欢快地叫着。 |
| 4. | As the girls walked along the street , they sang happily
这些女孩一边沿着街走，一边高兴的唱着歌。 |
| 5. | In summer , cicadas sing happily
夏天里，知了开心地唱著歌。 |
| 6. | With tools on their shoulders , the seven dwarfs walk home singing happily
小矮人扛着劳动工具,哼着歌儿往家走来 |
| 7. | While we were singing happily , there was this old man that started to complain
我们高兴地唱歌的时候，发现另外一个老人在抱怨。 |
| 8. | Summer leaves are standing on tree branches ever covered by snow , singing happily with wind
大雪曾经压住的枯枝，长满了夏日的繁叶，在风儿中快乐地歌唱。 |
| 9. | People come out and besiege the chief . servant kills the thief with a knife . the chief dies . the people dance and sing happily
（人们跑出来，围着头领。佣人拿着刀，把他杀了。头领死了。人们高兴地又唱又跳。 ） |
| 10. | They are not used to the man - made environment untill one year after . they now sing happily in the cage and wake my family and i at 6 : 00 everyday
一年以后，它们对这个人工环境已经习惯，它们在笼子里歌唱着显得很高兴。每天早晨六点钟，就能听见它们的歌声，它们用歌声叫醒我，和我的全家。 |
