Summary:
The letter ה is added when the משנה references a פסוק. Once a word is used with a ה for it is קאי אקרא (like איש or אשה) it is generally used with a ה.
Summary:
Three reasons why the משנה writes בתולה נשאת and not נושאין את הבתולה; it is briefer, it implies her consent, and there is no פסוק to require otherwise (as opposed to האיש מקדש).
For if he had a claim of, etc. - שאם היה לו טענת וכולי
Summary:
The תקנה of בתולה נשאת ליום ד was made initially for אשת כהן or פחותה מבת ג, however it was extended to שאר נשים either because of לא פלוג (the view of תוספות), or because there is the possibility that יתברר הדבר בעדים (the view of רש"י).
For what reason did they say that a בתולה is married on Wednesday; because we learnt in a משנה, etc. - מפני מה אמרו בתולה נשאת ליום הרביעי לפי ששנינו כולי
Summary:
The question of מפני מה אמרו means what ramification is there as a result of this enactment. רב יוסף felt that the main ramification is stated in our משנה.
And she should get married on Sunday - ותנשא באחד בשבת
Summary:
The reason of ברכה is merely good advice but he is not a transgressor if he does not follow it; as opposed to the reasons of שקדו and טענת בתולים, where he is considered a transgressor