Unit 4 Wildlife Protection
Grammar
Revision of the Passive Voice
Every year over 29,000 antelopes ________ (kill) in Tibet.
--- 普通现在时被动语态
2. In the past, the elephants __________ (kill) by farmers.
--- 普通过去时被动语态
are killed
were killed
3. In the past twenty years, a large number of bamboo areas ______________ (set up) to help pandas grow.
--- 现在完成时被动语态
have been set up
6. At present a new home ____________ (build) for pandas.
is being built
--- 现在进行时被动语态
5. WWF hopes that more and more wild anima ...