'has again put' is correct and can be used in written English.
It is the present perfect tense construction, used to describe a past action that has present consequences. An example of using it would be: "John has again put off his project deadline, delaying the completion of the project."
Now his father has again put present despair into perspective.
That has again put a damper on new construction and sales.
Undaunted, he has again put himself up for election to the board.
Now, a seasonal ice-skating rink that Rose opened at the end of November has again put management and many residents on a collision course.
A recent nationwide surge in deadly attacks against religious minorities, particularly against Ahmadi and Hazara Shiites, has again put a debate over tolerance on the national agenda.
Coach Bob Bradley has again put together a roster that includes a number of players who have never made an appearance with the senior national team.
Nor would 24 Kg5 have been wise, because 24... Rf8 25 fe7 Rg8 would have again put White's king in danger.
During the past year, however, large-scale corporate scandals have again put the spotlight on corporate governance, and this time, individual investors are demanding more answers.
Watson's comments have again put the Bombers in an unwanted spotlight ahead of Thursday night's away match against West Coast.
Only four months since Labour was re-elected, ministers have again put off reform, until after the next election due in 2009 or 2010.The fit of nerves is easy to comprehend, if not to condone.
In any case, the latest revelations have again put the spotlight on a father-son relationship that seems to have mimicked the distant and unforgiving one Trump had with his own father, Fred Trump.
