first act的用法和樣例：
例句
- She worked over the first act of the play.
她重寫了劇本的第一幕。 - The show was so boring that I could hardly sit through the first act.
演出十分乏味，我幾乎無法看完第一幕。 - In the first act the curtain goes up on a dungeon in a landlord's house.
第一幕啟幕時，舞台上現出了地主家裡的一個地牢。 - The stage lights (were) dimmed, and the play's first act was over.
舞檯燈光暗了下去，這齣戲的第一幕結束了。
