-
1. I have not practiced very much.
（我練習不多。）
2. I should have practiced very much.
（我應該多練習。）
3. I am worried about something.
（我擔心一件事。）
4. I might forget something.
（我可能忘記東西。）
5. What should I say during the speech contest?
（演講比賽中該說些什麼？）
-
1+2.
I have not practiced as much as
I should (have practiced).
-
1+2+3.
Not having practiced as much as I should,
I am worried about something.
- 1+2+3+4.
Not having practiced as much as I should,
I am worried (about the possibility)
that I might forget something.
-
1+2+3+4.
Not having practiced as much as I should,
I am worried about forgetting something.
- 1+2+3+4+5.
Not having practiced as much as I should,
I am worried about forgetting
what I should say during the speech contest.
- 1+2+3+4+5.
Not having practiced as much as I should,
I am worried about forgetting
what to say during the speech contest.
- 1+2+3.
Because I have not practiced as much as
I should, I am worried about something.