4.现在进行时:
The pig is being killed. 猪正被宰杀。 5.过去进行时:
The pig was being killed. (同上)
6.现在完成时:
The pig has been killed. 猪已被宰杀了。 7.过去完成时:
The pig had been killed. (同上)
七、谓语与主语的人称和数一致的某些原则是： ①两个或两个以上作主语用的单数用and连接时，谓语要用复数。
②两个作主语用的名词或代词由
either...or,neither...nor连接时，谓语应与后一个名词或代词的人称和数一致。
③两个作主语用的名词或代词由as well as 连接时，谓语应与前一个名词或代词的人称和数一致。
④当people,police,cattle等作主语时，谓语用复数。 ⑤集体名词
family,crew,class,crowd,committee,audiance等用作主语，表示整体概念时，谓语用单数；包含一个个成员的意思时，谓语用复数。
例：My family is a small one. My family like hike.
⑥表示“时间”、“金钱”的名词，其复数作主语时谓语仍用单数。
例：Five minutes is enough.五分钟就够了。 Four yuans is too dear.四元太贵了。
⑦There be 句型中，be 的形态与其后第一个名词的数一致。 例：There is one dog,four cats and six ducks under the three. There are four cats,one dog and six ducks under the tree.
八、条件句
①一般条件句(即真实条件句)的结构：
If+主语+各种现在时态。。。，主语+will+动词原形 shall can may must ②与现在事实相反的假设条件句的结构：
If+主语+动词过去式。。。，主语+would+动词原形 should could might ③与过去事实相反的假设条件句的结构：
If+主语+had+过去分词。。。，主语+would+had+过去分词 should could might ④与未来事实相反的假设条件句的结构：
If+主语+were to +动词原形---，主语+would+动词原形。 should could might 说明：?条件句分为一般条件句和假设条件句。
?一般条件是指真实条件；假设条件是指非真实条件，是虚假的。
?在假设条件句中，条件从句的be动词，不分人称和数，一律用were.
九、倒装句
以以下单词或词组开头的句子，其谓语部分要倒装。 ○hardly 几乎不 ○scarely 几乎不 ○only 仅仅
○no sooner 一---就 ○not only 不仅--而且 ○not until 直到---才 ○nowhere else 哪儿也不
(The End)