The phrase "useful and constructive" is correct and usable in written English.
You can use it to describe a particular action, event, or person. For example, "John's comments during the meeting were both useful and constructive, helping to move the project forward."
We have now submitted a new version of our paper, which we have revised in the light of your comments, which we found extremely useful and constructive, though they caused us significant extra work.
Some of the committee's findings were useful and constructive.
"The meeting was very useful and constructive and we discussed everything in detail," Mr. Arafat told reporters on his return to the Gaza Strip.
Secretary Powell called the three hours of intense talks with Mr. Arafat "useful and constructive" but offered no hint of progress toward a truce to end 18 months of violence.
Michael Mann, Ms. Ashton's spokesman, said in an e-mailed statement that it was "a useful and constructive meeting and an important opportunity to stress once again to Iran the urgent need to make progress".
At a joint news conference in the West Bank city of Ramallah with Prime Minister Enrico Letta of Italy, Mr. Abbas told reporters that Mr. Kerry had presented "useful and constructive suggestions," although some clarifications were needed.
We greatly appreciate the useful suggestions and constructive criticism from the two anonymous reviewers, which significantly improved the manuscript.
And it is also time to engage your friends and relatives and fellow congregants who disagree with you on the issues now at stake in this country in thoughtful, useful, civil, and constructive ways.
The authors would like to thank José Fahrni and Jackie Guiard for technical assistance; Juan Montoya for useful suggestions and constructive discussions; Jacques Rougemont for help with the vital-it server.
Finally, special thanks go to Nicholas Thomas, for his useful advice and constructive comments.
We thank the reviewers for their useful feedback and constructive comments for improvement of our manuscript.
