Now I put the sugar in the cup.Now 为什么放在句首

Now I put the sugar in the cup.Now 为什么放在句首 Now I put the sugar in the cup.把糖放入杯子.为什么不用putting 【英语】请问这个句子是不是有问题?Now i put the sugar in the cup.它这里有now（现在）说明时态是现在进行时,不是应该是Now I am puting the sugar into the cup.句子中介词用in,用into不是更好吗?请问可以 i unwapped a hump of sugar and put it in my coffee.the sugar didn't get wet.why I unwrapped a lump of sugar and put it in my coffee.The sugar didn't get wet?Why? 比较：Now I put the sugar in the cup.I am doing my homework now.第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作.再如：Now watch me,I switch on the current and stand back.第二句中 The dictionary_________on the table is now missing.A that I put B that I put it I unwrapped a lump of suger and put it in my coffee.The sugar didn't get wet.Why? I like to put sugar—— the porridge.In Canada, they eat cereal ——breakfast. put a little sugar in the centerput a little sugar in the center of small pieces how much sugar ( ) your mother put on the bread salt would put we in sugar the sugar instead of bowl连词成句 You mustn't put sugar on bread.改为同意句（ ）（ ）sugar on the bread. I ———— the book on the desk,but it's not there now A,have put B,put c,will put D,had put The dictionary is yours.I put the dictionary on the desk just now 改为定语从句 I (put) it in the drawer yesterday but I can't find it now. The book that I put on the desk is now missing.这句对吗 The bag( )on the desk is now missing.{选择并分析解释} 【重金悬赏】A.I have put it B.that I have put C.as I put it D.which I had put