英和和英

About three weeks.

In about two weeks.

Three weeks went by.

less than three weeks

It is about one week.

within a week

a fortnight

a whole week

three times a week

two complete weeks

in a week's time

a couple of days a week

Two weeks went by.

for weeks

Twice per week

It's about one month.

One per week

every second week

up to four weeks

a period of three months

over a three-month period

A week is seven days.

A week has seven days.

I will reply within 3 weeks.

This has been a long week.

It's been a long week.

3 week wait

Once a week

Three months later.

There are seven days in a week.