写出下列句子的主语1.Three plus five is eight.2.Watching TV after lunc

写出下列句子的主语1.Three plus five is eight.2.Watching TV after lunc Five plus three is eight.这个句子为什么用is呢? three plus five equals eight.句子中的plus是单数是复数还是三单形式?plus的原型是什么 three and five is eight 哪个单词是主语 five and three are eight .还是is eight 怎样写出数字的序数词形式?One.two.three.four.five.six.seven.eight.nine.te 关于"watching TV"的句子 按要求改写下列句子 1.The girl is( watching TV) at home (就括号部分提问） 2.T洒 ---What's three and five?---I ______ is eight. Eight minus three is(five)(就括号部分提问） What is eight plus nine? Five pius three equais eight 的汉语意思