'will certainly happen' is a correct and usable part of a sentence in written English.
You can use it to express certainty in a statement or promise. For example: "If you follow these steps, success will certainly happen."
"But it will certainly happen".
"They will certainly happen this year," said David.
Now an Essex County freeholder, Ms. Davis said the key "to what people call Steve's power" is that "if he says it will happen, it will certainly happen".
"If it does happen, it will certainly happen in a one-on-one, in a setting away from other people's eyes and ears".
It will certainly happen, but at the moment, no one knows when.
As with any other type of technological shift, there undoubtedly will be FUD (fear, uncertainty and doubt) and sensationalized stories about the risks of wearable tech — it happened with the radio, the telephone, the TV, the microwave, the PC and the Internet, and will certainly happen again with wearables.
Although this will almost certainly happen, the fact that conservatives will no longer have a legal right to pretend that nothing has changed seems to them an appalling persecution.
Before we automate hotels with AI and robots (which will almost certainly happen) the first wave of this revolution will be brought by the software that runs hotels with humans.
But it will almost certainly happen again, no matter how many masters of the universe build seaside monuments on terrain where nothing will last forever.
The same will almost certainly happen before the 2015 vote.As the Lib-Lab relationship evolves, the mood in the current Liberal-Tory coalition will deteriorate further.
If that does not happen Thursday, it will almost certainly happen soon.
