Mr. Peter has written a lot of articles for the CNN News. => A lot of articles for the CNN News have been written by Mr. Peter.

The last time I went to the museum was four years ago. => I haven’t been to the museum for four years.

Think it through very carefully. Or else, you will not come up with the right answer. => Unless you think it through very carefully, you will not come up with the right answer.

No hotel in the city is as comfortable as this one. => This hotel is the most comfortable one in the city.

Although it looks fierce, the dog has never bitten anyone. => Fierce as it looks, the dog has never bitten anyone.