help me!English

be(是) = is,am, are, was ,were.但用在不同的主位後
主位 = I , we, you, they, he, she, it

現在式時:
he 他/ she她/ it它,牠 要用 is (是)
I 我 要用 am
we我們/ you 你,你們 /they 他們 要 用 are

過去式時:
he/she/ it /I 用 was

we/you/they 用 were

明白嗎?

Hello,I (1)am Chris.I(2) am a boy of twelve.I will study Form One next year.I (3) am a boy scout.I like to go hiking in my spare time.My father(4)is a fireman.He works in Mongkok.My mother(5)is a housewife.She takes care of us.She(6) is a good mother.My father and my mother(7)were schoolmates before they got married.I have a sister called Carmen.She(8) is ten.She studies in a primary school.She likes to play volleyball.Besides,she likes listening to pop music.Her favouritesinger(9)is Eason.She has a lot of photos of Eason.
This (10) is my firend Alan.He(11) is also twelve.He studies in my school.We(12)are classmates.We (13) are also good friends.We always play together.Alan(14) is the only child in the family.He likes to play computergames.He has a lot of computer games at home.However,he(15)is also a hardworking student.He always comes top on class.
Mary,Jackie and Cathe(16) are schoolmates,but they(17) are not studing in the same classes.Mary(18) is studying in S.2A,but Catherine and Jackie(19) are repeaters and studying in S.1C.They (20) were S.1B students last year.This year,They(21) are members of the Computer Society,but last year they(22)were not .They(23) are now working hard to get the Bronze medal of the competition this year.Next year,They(24)will like completing the Gold Award though it(25) will be extremely difficult to get.
Mr.Wong is the teacher responsible for the Computer Society in our school.''John and Fiona(26)were Gold Award Winners last year.It is very difficult to get the Gold Award.However,they passed all the tests and now they(27) are senior members of the society.Mr.Chan and Miss Mak(28) will be examiners for assessing Computer Society Award next year.''Mr.Wong told us seriously.

(1) am
(2) am
(3) am
(4) is
(5) is
(6) is
(7) were
(8) is
(9) is
(10) is
(11) is
(12) are
(13) are
(14) is
(15) is
(16) are
(17) aren't
(18) are
(19) is
(20) are
(21) were
(22) weren't
(23) are
(24) will be
(25) is
(26) were
(27) are
(28) will be

2010-08-18 17:54:18 補充：
corr:
20) They _were_ S.1B students last year.



首先判斷左tense,
現在式就可能係is / am / are
過去式就可能係was / were
將來式就可能係is going to / are going to / am going to / will(+v.) / will be(+n. or +adj.)

然後判斷係單數定眾數, 同埋係唔係否定.

2010-08-18 18:01:18 補充：
Sorry, 有幾題打錯左

17) are
18) is
19) are
20) were