An native English speaker said the correct grammar should be ... 'she speak,' rather than ...'she speaks.' What is the grammar rule?
2 Answers
The sentence is parsed, Her uncle prefers..."that she speak..."
"that she speak" is a subjunctive clause, not an indicative clause. That's why it's "conjugated" differently. And that's true even in the English language.
Although "She speak" is correct, so is "She speaks", depending on what is meant. On a particular issue, the uncle may prefer that she speak to him personally, but for all issues, the uncle prefers that she speaks with him personally. It's a matter of number agreement, but the sentence as given doesn't indicate number except in the word "speaks" or "speak" "Regarding Sylvia's request through John for more money, her uncle prefers she speak with him personally." "Her uncle prefers that she speaks without mumbling."
This also works with "speak to" which is a one way conversation. When a specific conversation or issue is being referred to, use "speak", as in: "I would like you to speak to your son about his behavior." When multiple issues are spoken about, use speak: "In her novels, Sylvia speaks to the need for companionship."
-
2This question has nothing to do with subject/verb number agreement. "... that she speak ..." is subjunctive; see the other answer. And your second paragraph is comparing an infinitive ("to speak") with a verb conjugated in the present tense ("Sylvia speaks"). These are apples and oranges. Aug 28, 2014 at 20:36
-
You're thinking of habitual versus particular, not number agreement. Aug 28, 2014 at 21:35
-