The functional word "his" only makes the sentence grammatically correct.

功能词“ his ”实际上就是使这个句子语法上的正确。

youdao

Make sure that the sentence is grammatically correct and punctuated correctly.

注意句子的语法和标点都正确。

youdao

IntelliSense is a great tool here, to help you write grammatically correct code!

智能感知是一个非常好的工具，它能帮助你纠正代码中的语法错误！

youdao

or totally grammatically correct or might sound awkward,

也不用在乎语法是否完全正确，或者听起来是否别扭，

想学好英语吗？ - SpeakingMax英语口语达人

Similarly, my question was more likely to get answered if it was at least reasonably grammatically correct.

FORBES: The Cult of Access, Obama's Reddit AMA, and the Softball Question Problem

Simple, well-written, timely, proofed and grammatically correct correspondence could be the lynchpin to seal the deal on that position you covet.

FORBES: Connect

One of Harbaugh's most used tactics is the vague answer a string of "possibilities" and "maybes" that sometimes make a complete, grammatically correct sentence.

WSJ: Coach Jim Harbaugh Presents: How to