The phrase "a half weeks back" is not correct in written English.
The correct expression should be "a half week back" or "two and a half weeks back."
Example: "I visited my grandparents two and a half weeks back."
Alternatives: "a couple of weeks ago" or "a few weeks prior."
But while she obeyed her folks, she spent just two-and-a-half weeks back at home, never filled in that college application form and told her parents she was heading back to the Big Apple.
But in two and a half weeks I'll be back on the treadmill with a world series race in Stockholm.
"On my two trips it took about three and a half weeks to get there and back.
It began two and a half weeks ago, when the Knicks 25-400) played back-to-back games at Miami and at home against Seattle.
Iraqi government forces have been trying to retake Tikrit, which is 100 miles north of Baghdad and was overrun by ISIS on June 12, for two and a half weeks, launching a number of assaults backed by armored vehicles and helicopter gunships.
Wakefield, who spent five and a half weeks on the disabled list because of back problems after the All-Star break, pitched seven innings Wednesday, allowing one run and six hits in a win over the Chicago White Sox.
Castillo (8-7), struck out five and walked none, throwing 86 pitches in his third start since missing five and a half weeks with a strained muscle in his back.
The call can only take place between 8am and 2 30pm, never on weekends or holidays and must be scheduled one and a half weeks in advance (we can choose a back-up number to call but if neither picks up, we don't get a call).
The doctors told her she would be out for two months; she was back in two and a half weeks.
· We have just come back from three and a half weeks travelling with our two Border Collies in Italy.
My next competition is in Bydgoszcz in two and a half weeks, so I've got time to come down and get back into training.
