Hi, my name is Alice. I am from China and have a grammar question. Thanks!

[Snowqiao]

Hello dear all,

My name is Alice. I am from China. Nice to meet you all.
:D
Does the following sentence has grammar mistakes?

In this argument, an essential inference is that the exam must be taken to pass the course.

Thanks

[Mister Micawber]

.
Hello Alice-- and welcome to E-T.N. I have corrected your mistakes in bold:

Does the following sentence have grammar mistakes?

In this argument, an essential inference is that the/an (?) exam must be taken to pass the course.
_________________
Native English teacher at Mister Micawber's

[Snowqiao]

:lol: