How does Miller show his ability to build up tension in this extract? E

How does Miller show his ability to build up tension in this extract? (page 50 "How about some grape juice" - page 52 "the court did not know him Annie!) Throughout the play "all my sons" Miller thoroughly expresses his ability to change and strengthen our emotions and develop tension between characters. I found this effect of tension particularly evident in this extract, a discussion between George, Chris and Annie. Due to past history, we already know that feelings between Chris and George are going to be "on edge". It appears that tension is already apparent in the first few lines although the overall atmosphere appears fairly mellow and laid back: "How about some grape juice? Mother made it especially for you" -Chris George replies with forced appreciation, perhaps indicating that he doesn't really want to be there. The argument between Chris and George doesn't actually begin until George states: "When you make suckers out of people once, you shouldn't try to do it twice." I believe this hurtful remark against Chris is in view of his father. By ...