8.differently(adv.)修饰spell(v.) 9.have trouble (in) v-ing结构没问题 猜测此处一空限填一词 5.The cars made in Japan are much cheaper than those (cars) made in America. those指代复数名词 that指代不可数名词 13.She was seen in the cinema an hour ago. 据句意(被看到)及词性(vt.) 故适用被动语态 10. …my dog remained at home.=…my dog was at home. remain(link.v)等同系动词 系词无被动 13. …You always do what you can to help others. 可简化为 …You always do your best to help others. do谓语动词 to help不定式做非谓语 同一简单句不能同时存在两个谓语动词 14.I found a letter lying on the floor… 此句有2个动词 found(谓语动词) lying(非谓语)