【正文】
machine do? It washes the potatoes. potato es What does this machine do? ? This machine cut the potatoes. scut the potatoes What does this machine do? This machine put the crisps in the bags. s touch ? Don39。 祈使句的結(jié)構(gòu): 肯定:以動(dòng)詞原型開頭, please可放在開頭 或