Question

英语题，求解！详细的最好

Look at the following sentences. For each sentence, answer these threequestions:
a. Do they contain definingor non-defining relative clauses ?
b. Which worlds orideas do the relative pronouns refer to?
c. Does the relativepronoun act as the subject or the object of the verb?

1、Dr Chris Lambrides, a research fellow at the University of Queensland, is nearing the end of aproject that aims to develop more drought-tolerant sunflowers by selectingflowers that use water more efficiently.
2、 The research teamdiscovered that its initial approach did not cater for changes in wind speed,which could not be controlled as an experimental variable.
3、It has a garage on the track, where it waits until thelight intensity is high enough to give useful results.
4、The main difficulty faced by the research groupwas to find an agronomist who could grow the perfect crop of sunflowers.

Answer 1

defining relative clause 限定性关系从句

non-defining relative clause 非限定性关系从句

1. a. Yes.

   b.the fist 'that' refers to 'a project'

      the second 'that' refers to 'selecting flowers'

    c.both of them act as object of the verb

2. a.Yes.

    b.'which' refers to 'changes (in wind speed)'

   c.object of the verb

3. a.Yes.

   b.'where' refers to 'in the garage'

   c.It acts as neither of them. It acts as an adverbial.

4. a.Yes.

   b.who refers to an agronomist

   c.object of the verb