Hello, fellas. How long have you been learning English? In this session we will learn how to ask about and express length of time.

According to Betty Schrampfer Azar, a question about length of time is started by how long.

Examples:
1) How long did you sleep last night?
2) How long will they stay in New York?

How long can be replaced by how many + minutes/hours/days/weeks/months/years.

Example:
How many weeks will they stay in New York?

On the other hand, length of time can be expressed by this formula:

It + Take + (Someone) + Length of Time + Infinitive

(Infinitive = to + the simple form of a verb)

Examples:
1) It takes 90 minutes to play football.
2) It took Mary two months to write her book.

Source:
Betty Schrampfer Azar, Fundamentals of English Grammar: Third Edition

Compiled and written by @fathrahman for @EnglishTips4U on Tuesday, August 27, 2019