3. I’ve never seen it, so I’m not sure I agree with you. 4. I looked to the east — the sky was becoming grey. 5. You’ll get there in five minutes. 6. Am I going the right way? 7. The sun rose behind me and shone on the rocks. 8. I think the Giant’s Causeway is the most fantastic natural wonder.

现在完成时

一般现在时

现在进行时

一般过去时

一般现在时

一般过去时

过去进行时

一般将来时