Age in Task 1
People in the 14-17 group of age were most affected by the changes.
I know, this seems to make sense, and your meaning is clear, but if you want a high score for vocabulary you need to use better collocation inside your noun phrases:
People in the 14-17 age group were most affected by the changes.
Indonesian candidates often translate directly kelompok umur as group of age. Although communicative, this is weak collocation in English.
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The following are all possible. Unfortunately you just have to memorise them. Try to use them as soon as possible in your writing practice and soon they will become automatic.
- a person who is 49 years of age
- a person who is 49 years old
- a person who is 49
- a 49 year-old person
- a 49 year-old
More often in IELTS, person is plural (= people), and so the following noun phrases are also possible:
- 49 year-olds
- 49 year-old people
- people in the 50-60 age group
- people aged between 50 and 60
- people aged 50-60
- people (who are) 50-60 years old
Of course we could be more specific about person or people:
- A 49 year-old English teacher
- English teachers in the 49-59 age group