The phrase "a couple of attacks" is correct and usable in written English.
It can be used to refer to two or a few instances of attacks, often in a casual or informal context.
Example: "The city experienced a couple of attacks last week, raising concerns about safety."
Alternatives: "a few attacks" or "several attacks".
"There have been a couple of attacks.
"A couple of attacks has turned America from a superpower to a zero power".
A couple of attacks seem to have encouraged the Argentinians, perhaps even awakened the thought that they should take try to advantage when they had a little momentum and try to get the game done in 90 minutes rather than risk exhaustion in extra-time, and pushing forwards, they fleetingly lost shape.
In the event the USA were stretched but not broken again, and they even found the wherewithal to mount a couple of attacks in injury time which for a brief moment threatened to give them an unlikely draw, until Philipp Lahm's excellent recovery and block on Alejandro Bedoya as he shaped to finish a move, then Clint Dempsey's back-post header flew over the bar.
"I thought we started the second-half really well to be honest we had a couple of attacks, a couple of shots at the keeper at the near post and he showed good hands.
We have performed an extensive experimental analysis of collusive and noise attacks on Gaussian spread-spectrum fingerprinting, and introduced a couple of novel attacks.
Then he had a couple of heart attacks and decided there was no longer any good reason to wait.
The agent was a "gold mine," Baer writes, "providing information that stopped a couple of terrorist attacks".
"I let the other guys do a couple of little attacks first so they could kind of wear each other out," the 25-year-old said.
There had already been a couple of suicide attacks on American positions, and the men began to think that they were next.
There were reports last night of a couple of heart attacks, which is considered normal for a crowd of 67,000 here.
