The part of the sentence "it is necessary to emphasize" is correct and usable in written English.
You can use it when you want to give emphasis to a point or conveying the importance of something. For example: "Given the current issues, it is necessary to emphasize the importance of safety measures in the workplace".
It is necessary to emphasize the significant impact of thawing permafrost on the thermokarst lakes on the QTP.
Therefore, it is necessary to emphasize the study of soil type changes in the arid and semiarid region.
It is necessary to emphasize that the proposed method is very general and can be applicable to a very broad class of optimization problems.
At this point it is necessary to emphasize that the main discussion is given to Czech large size manufacturing companies from both points of view.
It is necessary to emphasize that the proposed classifier holds an exclusive advantage: it can detect the outlier.
It is necessary to emphasize that there are also the failures in DES which cannot be recovered by means of the procedure.
He returned, in fact, to homophonic writing when it was necessary to emphasize a point, allowing the highest voice part to project the melody in what was essentially a kind of "choral recitative".
Eugene McCarthy made this point in The Year of the People, his book about the tumultuous events of 1968 in which he played an honorable leading role: that sometimes it's necessary to emphasize not unity but division.
It was necessary to emphasize that the activation effect of ACR was quite obvious particularly.
In the SF-12, it was necessary to emphasize the words 'physical' and 'mental' in questions such as 'accomplished less because of your physical health' or 'accomplished less because of mental state' to clarify the separate domains of health being asked about.
We did not adjust the P-values in our presentation because we believe a transparent presentation of the results is necessary to emphasize associations that are consistent with previous knowledge and to highlight the need for replication of unexpected results.
