1. Most of you have seen movies or plays in a theatre, but have you ever been involved in making a movie or a play?
involve是及物动词，意为“参与、专心于”，而句式involve in doing sth. 则表示“参与做某事”，如果表示“参与某事”用involve in sth. 即可。如：
Did you involve in making this new plan? 你参与制定这项新计划了吗？
2. A good script needs to be written.
句中的to be written是不定式的被动结构，need 加上不定式的被动结构表示“需要被做”，此时还可用need 加动名词加以替换。如：
Your classroom needs to be cleaned. = Your classroom needs cleaning. 你们的教室需要打扫了。
3. Comedies make people laugh and feel happy.
make后面可以接名词、代词、不带to的不定式、形容词、过去分词等词语构成的复合结构。如：
We made Bill our monitor. 我们选比尔当班长。
