21、这群孩子：this group of children

20、一群学生：a group of students

19、躺在沙滩上：lie on the beach　　 正躺在沙滩上：be lying on the beach

18、拍照：take photos=take a photo

17、热的/冷的/温暖的/凉爽的/潮湿的be hot/cold/warm/cool/humid

16、刮风的：be windy

15、多云的：be cloudy

14、在度假：take a vacation(动词)

13、在度假：on vacation(介词)

12、许多人：many/a lot of /lots of people