Opportunity seldom knocks twice.
twice a week
The planet Arèmo X3 is almost twice the size of planet Earth, and as you can see on the screen, quite similar to your world.
Touch the base of the lamp once to turn it on and twice to turn it off.
Twice a year he sends his car in for extensive detailing.
Moreover, she liked walks so much that even in the middle of winter she would come like this to ask to go out twice a day without fail.
Aristotle maintained that women have fewer teeth than men; although he was twice married, it never occurred to him to verify this statement by examining his wives' mouths.
We recommend that mains water have a water-quality test carried out once a year, well water twice a year.
Twice a week the gardener would come to mow the grass, so I could never lie and read in the long grass.
After rounding the Dragon's Tooth, the wind was on our side, and we were flying. It felt like we were running twice as fast.
According to the author Joe Marconi, books that are labeled "Harvard Classics" can demand twice the price.
Deceive me once, and I will forgive you; deceive me twice, and you're a double-crosser.
I myself have, before becoming employed by this company, twice spoken bluntly to the people at the top.
I'm sure people would live twice as long if they stopped getting themselves worked up over everything.
He's on the playground, surrounded by 12-year-olds twice a day, five times a week! How do you expect him to be mature?
English word "once"(twice) occurs in sets:Word pairs - pary słów
I'm at the hospital. I got struck by lightning.
How many times a day do you look at yourself in the mirror?
I'm good at Japanese.
I'm thinking about complaining about my son's teacher at the kindergarten.
To the best of my knowledge, the lake is the deepest at this point.
He did something stupid and was sneered at.
Happiness depends not so much on circumstances as on one's way of looking at one's lot.
You went to bed at 2 o'clock in the morning? No wonder you look sleepy today.
Do you mind if I call on you sometime? "No, not at all."
School begins at half past eight except on Wednesdays and Saturdays.
At first I felt a bit too shy to speak to her.
At the party the other night, my brother drank a bit too much and passed out.
At Narita Airport, I ran into an old friend of mine.
When I was a kid, touching bugs didn't bother me a bit. Now I can hardly stand looking at pictures of them.
Her composition had no grammatical errors at all.
3. only one time
English word "once"(only one time) occurs in sets:Most common adverbs