條件句 if

if 同時間子句唔用 will；假設用過去式。

• ✗ If I will have time, I will call.
  🔊✓ If I have time, I will call.

  if 子句唔用 will。

• ✗ I will tell you when I will arrive.
  🔊✓ I will tell you when I arrive.

  時間子句唔用 will。

• ✗ If I would be you.
  🔊✓ If I were you.

  假設用 were。

• ✗ I wish I have more time.
  🔊✓ I wish I had more time.

  wish + 過去式。

• ✗ Unless if you go.
  🔊✓ Unless you go.

  unless 已含 if。

• ✗ If you will study, you will pass.
  🔊✓ If you study, you will pass.

  if 子句用現在式。