Final answer:
The sentence 'Namgay had never been to a big city like London.' can be restructured to start with 'London' without changing its meaning. An example transformation is 'London was an entirely new experience for Namgay, as he had never been to a big city before.'
Step-by-step explanation:
The question "Namgay had never been to a big city like London. [Begin with: London]" seems to be an exercise in sentence transformation, commonly seen in English grammar assignments. The student is tasked with rephrasing the original sentence while starting with the word "London" and ensuring that the meaning of the sentence remains intact. A possible rephrasing could be: "London was an entirely new experience for Namgay, as he had never been to a big city before." This exercise helps students learn how to restructure sentences without changing their original meaning, which is an important skill in both speaking and writing.