In the play, the supernatural, which takes the form of the witches, is both a motive force (the prophecy sets things in motion) and also a commentary. Macbeth, the character, starts by being ambivalent to the witches and their prophecy, but he relies on their prophecies more and more as the play goes on, because he has nothing else to hold on to.
The play is called Macbeth because the story centers around Macbeth. Although Lady Macbeth is an important character, she is only the second most important character. In addition, Shakespeare had a habit of naming plays after kings, even if the king is not the most important character in the play (as in Henry IV Parts 1 and 2 and the three parts of Henry VI). So even if you think Lady Macbeth was as important as Macbeth (and I suggest that's tough to argue), the play is still called Macbeth, because he did not write a play called Queen Margaret even if she's more important than Henry VI her husband.
In Macbeth, important events that take place at Fife Castle include Macduff's discovery of Duncan's murder, Malcolm's testing of Macduff's loyalty, and the gathering of forces to overthrow Macbeth. It is also where Lady Macbeth's illness and eventual death occur.
It is important that witches reappear in Act 4 of MacBeth because they tell him of his future. This helps to shapes many of the events later in the story.
He kills Duncan. It is important because it make the villagers aware of his descent into madness, and so they decide to kill Macbeth and get a new king.
Macbeth was important at the court of King Duncan because he was a trusted and respected general in the Scottish army, known for his bravery and loyalty. His military victories contributed to the stability and security of Duncan's reign. Additionally, Macbeth's marriage to Lady Macbeth, who had ambitions for greater power, also played a role in his ascent within the court.
Umm, Macbeth. The title is a hint, although it doesn't always work out that way in Shakespeare.
And then Macbeth asked Macbeth if he confronted Macbeth on killing Macbeth with Macbeth.
Macbeth and Lady Macbeth.
They are not friendly from the very start. When Macbeth is to be crowned, Macduff decides to go home to Fife rather than attend this important event. That's not a very polite thing to do to a king.
How does lady macbeth cover for macbeth at the banquet?
The first apparition warned Macbeth, 'Macbeth, Macbeth, Macbeth: beware Macduff, Beware the Thane of Fife. Dismiss me. Enough'
The witches don't make Macbeth perform any dark acts, such as killing King Duncan; they just put the idea in his head. The witches tell Macbeth he is the Thane of Cawdor (which he doesn't know yet) and also tell him that he will be king. Once Macbeth finds out he is in fact the Thane of Cawdor, he begins to believe the witches' prophecies. Lady Macbeth convinces him that the only way Macbeth can be king is by killing King Duncan, and he does so. The witches' role in making Macbeth a tragic hero is to serve a catalyst for Macbeth's dark thoughts.