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:
) f% x/ n) c: T/ S- G) D! wThe pen belongs to me.
( z' V: X& h5 lI was born in China seven years ago.
My mother borrowed these books from the library.

& s$ E8 r1 e6 ~5 ?) p (2) Types of Prepositions前置詞的類別：

(a) Prepositions of Time 和時間有關的前置詞
, n4 k4 j, K: m: n5 W1 Y$ S2 m- bIt helps to express the "time".
9 B% s; j" f4 _' C它用來幫助形容時間。
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* ~  m0 f$ x$ o6 oFor example 例如:
0 H# W# K/ @$ `, @7 G; |2 Oat　─　to describe an exact point of time (描述一個準確的時間)
The show starts at two o’clock.
" l( o5 N* I( p. K: P; x1 WGrandpa often takes a nap at noon.
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) H6 c) ]3 o( c: s; G4 m' X, {0 Bin　─　to express a certain period of time (描述在某一段時間內)
1 R! b0 V3 T  DI 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.
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4 H2 m0 `& h: `1 f8 x9 X' N. `; u' {& {$ ^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.
Betty has gone to the supermarket for ten minutes.
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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)
You have to finish the project by next Friday.
/ O# U3 a' F, `% V# X* T4 oPlease give me a call by tomorrow night.
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. O  M/ U0 B9 s8 G; \ (b) Prepositions of Place 和地點有關的前置詞
It helps to express a certain place.
它用來幫助形容地點。
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For example:
at　─　 to represent an exact place (表示一個準確地點)
Let us meet at school.
3 S+ j! Y8 X' F2 ~9 }! `I play computer games at home.
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1 O& ^9 L0 C0 j$ cin　─　 to express a larger area of place (形容在比較大範圍的地方)
Hong Kong is located in China.
  d1 L- \( a# S' O# {We have our dinner in a Italian restaurant.
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on　─　to describe that a thing placed on another thing (形容在某些東西之上)
Put your homework on the desk.
A ball is on the floor.

* j, B7 s) t% F4 sinto　─　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.
Jay fell into the water.
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' X  m! S" P+ u: sfrom　─　to show what the origin of somebody or something is (描述事物的來源處)
  w. e: k  e+ |8 TThe new teacher comes from Britain.
I have learned lots of things from this book.