1、Iwork.Heisstanding.Youaresitting.
2、SheplayedbasketballeithherfriendslastSaturdayafternoon.
3、S+V-s+OSheplaysbasketballwithherfriendseverySaturdayafternoon.
4、Weshouldkeepourclassroomclean.Heasksmetostudyhard.Hehelpsmecarrywater.
5、apairof:Hewearsapairofshorts.他穿着一条短裤
6、ShewasplayingbasketballwithherfriendsatthistimelastSaturdayafternoon.这个句型你写错了，应该是V-ing
7、SheisgoingtoplaybasketballwithherfriendsnextSaturdayafternoon.
8、alittleof：Knowalittleofeverything.什么都懂一点
9、Iamhappy.Heisastudent.Shelookstired.
10、HeteachesusEnglish.WecallhimDaMao.Heboughtmeacard.
11、alotof:Sheplaysalotofsport.她经常运动.
12、Look!Sheisplayingbasketballwithherfriends.
13、afewof有些：Afewofthemknowit.他们当中有少数人知道那件事。
14、anumberof:Anumberofpeopledisagreed.有几个人不同意。
15、akindof一种：Thisisakindofoil.这是一种油
16、asetof一套：Hehasasetofuglyfurniture.他有一套难看的家具。
17、ShewillplaybasketballwithherfriendsnextSaturdayafternoon.
18、IstudyEnglish.Icookdinner.Heishavinglunch.
19、apieceof：Itisapieceofcake.这是件轻松愉快的事
20、abitof有一点:Thereisabitofascholar.这里有一点墨水