Preposition 前置詞

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(1) What is a preposition? 甚麼是「前置詞」？
A preposition is a word we use with a noun or a pronoun to mark its relation with the other parts of the sentence.
「前置詞」是跟名詞或代名詞一起使用，以表示名詞或代名詞和句子中其他詞的關係。
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For example 例如:
) p% g( @; e# D# T$ ]The pen belongs to me.
I was born in China seven years ago.
My mother borrowed these books from the library.
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, ?* o& i* x8 C7 c (2) Types of Prepositions前置詞的類別：

(a) Prepositions of Time 和時間有關的前置詞
# e6 C( q8 V& H' o6 A! U0 ?1 @It helps to express the "time".
/ ?9 S# ?0 N" l它用來幫助形容時間。
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/ i. V  I9 t$ a; XFor example 例如:
at　─　to describe an exact point of time (描述一個準確的時間)
The show starts at two o’clock.
Grandpa often takes a nap at noon.

, g6 T  x: e0 W" `0 B! nin　─　to express a certain period of time (描述在某一段時間內)
I likes playing the piano in the afternoon.
Mary has her first swimming lesson in June.

on　─　to represent a certain time (表示一個時間)
Vivian gave me a gift on Friday.
My birthday is on the 6th of November.

for　─　to express something that lasts in a period of time (描述在某段時間內維持著的事情)
Shirley has learned Japanese for two months.
& F% }: D7 l% X9 [% a1 SBetty has gone to the supermarket for ten minutes.

by　─　to talk about an action that can finish at a certain point of time (形容在某個時間會完成的動作)
) X- J( J# {, x4 A7 iYou have to finish the project by next Friday.
" L# c/ `( k) ~' VPlease give me a call by tomorrow night.

(b) Prepositions of Place 和地點有關的前置詞
% Y) c% E/ v1 a  kIt helps to express a certain place.
它用來幫助形容地點。

For example:
at　─　 to represent an exact place (表示一個準確地點)
Let us meet at school.
1 a4 [8 `% r& h4 hI play computer games at home.
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  m/ l9 b1 L0 P* S" y/ e/ min　─　 to express a larger area of place (形容在比較大範圍的地方)
$ F. a  F: w/ B; m: Z" I0 D- s# xHong Kong is located in China.
We have our dinner in a Italian restaurant.

( L$ I* o2 @" b; F4 d7 Pon　─　to describe that a thing placed on another thing (形容在某些東西之上)
; X- K8 i! j  l+ CPut your homework on the desk.
A ball is on the floor.
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& x! R; t  M3 g! Yinto　─　to express an action going inside some places (表示一個動作「進入」一些地方)
Please come into the room.
4 e$ o% s0 U2 W* B' E9 z+ \3 ^; dJay fell into the water.
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from　─　to show what the origin of somebody or something is (描述事物的來源處)
1 h% n4 p( M8 Z3 X' P7 f! _- NThe new teacher comes from Britain.
2 h; |/ K; y3 q: [* ^I have learned lots of things from this book.