Pronoun case
18a. My brother knows more about technology than me.
18b. My brother knows more about technology than I.
My answer is: 18b
Right. :-)
becuase I is is a pronoun case
Good job! You are correct that the correct sentence is 18b: "My brother knows more about technology than I."
When comparing two things or people, it is important to use the correct pronoun case. In this case, we are comparing what your brother knows about technology with what you know about technology.
In sentence 18a, the pronoun "me" is used in the objective case. However, when comparing, we should use the subject case. By changing "me" to "I" in sentence 18b, we are using the subject case and making a grammatically correct comparison.
To determine whether to use the subject case or the object case in a comparison, you can rephrase the sentence to make it clearer. In this case, we can rephrase the sentence as "I know more about technology than my brother." This makes it clear that "I" is the subject of the comparison.