顿号表示话中间并列成分(并列的词或并列的短语)之间的停顿。又表示‘序次语’后头的停顿。一般地说,作为句子的主语、宾语、附加语的并列成分间多用顿号,并列的谓语间多用逗号。请在下面各句里加顿号或逗号。 (一)周大勇爬在泥水里炮弹在他周围爆炸泥土树枝石块唰唰地落在他的背上。 (二)夜里你从这个山头到那个山头处处能听到铁锹挖土声紧张的 The comma represents a pause between the middle parallel components (side-by-side or side-by-side phrases). Also said after the “preface” after the pause. In general, as the subject of the sentence, object and adjunct to the parallel composition between the commas, commas between the predicate. Please add a comma or comma in each sentence below. (A) Zhou Dayong climbed in the mud water Shells around the clay detritus rock falling on his back. (B) night you from this hill to the hill where you can hear shovel digging soil tension