人教版高一英语必修三unit 4 astronomy grammar课件（44张）.pptx
课件44张PPT。Unit 4Unit 4
Astronomy:
the science of the starsTo learn the noun clauses as the subjectWhat is subject?a noun, noun phrase or pronoun representing the person or thing that performs the action of the verb, about which something is stated or, in a passive sentence, that is affected by the a...