A and THE (a/an …)

Question 1

• a … = one thing or person:
• an (not a) before a/e/i/o/u:
• also
  → an hour (h is not pronounced: an -our)
• but
  → a university (pronounced yuniversity)
  → a European country (pronounced yuropean)
• another (= an + other) is one word:

Answer 1

…Rachel works in a bank. (not in bank)
…Can I ask a question? (not ask question)

…Do you want an apple or a banana?
…I’m going to buy a hat and an umbrella.

…Can I have another cup of coffee?