Question

1. What is the purpose of the text?
2. what is the text about?
3. what tense does it use in the text,
give a examples from the text

Answer 1

1. To help the writer (Farah) finished her science homework
2. Farah needs Afi's help to understanding the science homework
3. Simple present tense
4. - I really need your help ...
- I don't understand the chapters ...

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Answer 2

1. the purpose of the text is to ask for help through message.
2. the text is about Farah invites and asks Afi to explain the Science homework to her. 
3. it uses 'simple present tense and simple future tense'
for example :
simple present tense :
- I really need your help with the science homework.
- I don't understand the chapters
simple future tense : 
- My mother will cook dinner for you
- My brother will drive you home in the evening.