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Im=πI Im= √2I Ie= √2Im Im=√2/2I
S=Um·Im S=√2Um·Im S=½Um·Im S=½Um/Im
i＝ 0.637Im i＝ 0.707Im i＝Im/√3 i＝ 0.5Im
po＞ih＞im＞iv ih＞im＞iv＞po im＞iv＞po＞ih iv＞po＞ih＞im iv＞im＞ih＞po
lose weight; goes on a diet lose her weight; going on a diet lose weight; going on a diet lose her weight; go on a diet
Im=√3I； Im=√2I； Im=0.707I； Im=1.57I
the; the a; the a; / a; a
I=21/2Im I=21/2Im/2 I=2Im I=Im/2
Im=√ 2I； Im=√2I／ 2； Im=I； Im=√ 3I。
is going went has gone has been going
lose weight; goes on a diet lose his weight; going on a diet lose weight; going on a diet lose his weight; go on a diet
normal abnormal common right
Im = 2I Im = 2I/2 Im =I Im = 3I。
Im=√2I Im=√2I／2 Im=I Im=√3I
11Im1－3Im2＝ 5 11Im1＋3Im2＝5 11Im1＋3Im2＝－5 11Im1－3Im2＝－5
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