Câu tường thuật - dạng câu kể 

S + said to / told + O + (that) + S + V (lùi thì)

S + said + (that) + S + V (lùi thì)

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HTTD --> QKTD

HTD --> QKD 

now --> then 

must --> had to 

HTHT --> QKHT 

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1. Isabella told me that she was writing for her school newsletter.

2. She said that they depended on trees for the oxygen that kept them alive.

3. He said that endangered species needed their protection right then.

4. They said that trees kept up the ecological balance in their ecosystems.

5. Erick said that each of them had to be mindful to protect the environment.

6. They said that the pollution had aggravated to quite a great extent.

7. Mr. Philipp said that people were killing the rainforest, our planet's lungs. 

8. She said that the clearing of forests had also led to ecological damage.

9. Environmentalists said that it was their duty to protect the environment. 

10. The teacher says that the Earth is home to the millions of life forms.

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