IELTS Writing Task 1: Use 'while' sentences
I often write 'while' sentences in my task 2 introductions. I also like using 'while' in writing task 1 to make comparisons.
In the following example sentences, notice the position of 'while' and where I put the comma that separates the items being compared.
1) 'while' at the beginning of the sentence:
While the number of people who travelled by train increased gradually, the number of bus passengers fell steadily.
2) 'while' in the middle of the sentence:
In 1970, around 5 million UK commuters travelled by car on a daily basis, while the bus and train were used by about 4 million and 2 million people respectively.