Modern poetry, also known as metrical poetry, has strict requirements for metrical poetry, especially metrical poetry, which is the kind of eight sentences. The third and fourth sentences are required to be couplets, and the fifth and sixth sentences are couplets, called necklaces. The first two sentences and the last two sentences are called the first couplet and the last couplet respectively, and they can also be couplets, but there is no requirement. As for rhyme, even sentences must rhyme, and the first sentence can be bet or not, such as "the lake here in August is in harmony with the sky" Ozawa's water vapor transpiration on the cloud soil is white, and the waves seem to shake the whole Yueyang. I'm going to cross the water to find a boat and paddle. It's a shame to return home in the sacred age. When I sit here and watch a fisherman throw fish, I feel like a squid. "The first sentence rhymes, but it is" good rain knows the season, when spring comes. "Sneak into the night with the wind and moisten things silently. The wild path is dark, and the river is bright. Look at the red and wet place, Jinguancheng is heavy. " The first sentence doesn't rhyme. There is also a kind of arrangement, which is more than eight sentences and can be rhymed in the middle. You can choose your own rhyme and antithesis. For example, some of Bai Juyi's "Song of Eternal Sorrow" are contradictory, such as "the bells and drums will slowly ring the bell of the long night, and the river of stars will become clear in the sky just before dawn", while others are not.
The quatrains are relatively loose, so there is no need for antithesis. Of course, fighting can also be done. For example, "Huang Si's family is full of flowers and thousands of flowers are low." Even the butterfly dances from time to time, and the charming Yingying just cries. "The last two sentences are antithesis. The requirement of rhyme is that one or two sentences rhyme, and the third sentence can be left blank.
Antique requires a little looser rhyming antithesis, and the author has more room to play.
The antithesis requirements of modern poetry are also very loose, because some sentences use different words, so they can't be antithetical. As for rhyme, each paragraph must rhyme internally, but the requirements are also relatively loose.