Tài liệu học Tiếng AnhNgữ pháp Ordinal numbers Số thứ tự

FORMATION RULES
• Usually they all add –th to the cardinal number.
o Ex: tenth, fourth, sixth…
• Ending –y, change to –ieth.
o Ex: twenty twentieth, thirty, forty…
• Ending –t, add only –h.
o Ex: eight  eighth
EXCEPTIONS:
• 1
st
, 2
nd
, 3
rd
, 21
st
, 22
nd
, 23
rd
and 31
st
are irregulars.
• 5
th
, 9
th
, 12
th
and 29
th

suffer small irregularities.
1. COMPLETE .
a) 23
rd
_________________ h) ______ forty-second
b) 25
th
_________________ i) ______  sixty- sixth
c) 31
st
_________________ j) ______  seventy- first
d) 54
th
_________________ k) ______  ninety- third
e) 12
th
_________________ l) _____  fiftieth
f) 20
th
 ________________ m) ______  thirteenth
g) 5
th
 _________________ n) _____  twenty- ninth

2. READ AND COMPLETE .
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

1. Joe is__________
2. Jane is __________

3. Mary is _________
4. Sarah is __________
5. Billy is ___________
ORDINAL NUMBERS
1
st
first 16
th
sixteenth
2
nd
second 17
th
seventeenth
3
rd
third 18
th
eighteenth
4
th
fourth 19
th
nineteenth
5
th
fifth 20
th
twentieth
6

th
sixth 21
st
twenty-first
7
th
seventh 22
nd
twenty-second
8
th
eighth 23
rd
twenty-third
9
th
ninth 24
th
twenty-fourth
10
th
tenth 25
th
twenty-fifth
11
th
eleventh 26
th
twenty-sixth
12

th
twelfth 27
th
twenty-seventh
13
th
thirteenth 28
th
twenty-eighth
14
th
fourteenth 29
th
twenty-ninth
15
th
fifteen 30
th
thirtieth
3. READ AND COMPLETE.
1. Beth’s birthday is the ___________ of___________
2. Tom’s birthday is the ___________ of ___________
3. My birthday is the ____________ of ___________
4. My teacher’s birthday is the_________of _________
5. My friend’s birthday is the__________ of __________
6. My mum’s birthday is the __________ of __________
7. My dad’s birthday is the __________ of __________
8. _______________ is the third month of the year.
9. November is the _____________ month of the year.
4. READ AND WRITE THE HANDS ON THE CLOCKS.

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He gets up. He gets dressed He cleans his teeth.

He has breakfast. He watches TV for ten minutes.

He finds his shoes. He leaves his house.

7/4
31/7
12/9