46.The Blue Pig with a Black Tail黑尾巴的猪

46.《黑尾巴的蓝猪》词汇考点积累：
once upon a time 很久以前=long long ago (过去时标志词)
certain adj.确定的;某个/某些的
tail n.尾巴
so angry that...如此生气以致于...(so...that...如此...以致于...)
collect vt.聚集;召集
fight with sb. 和某人打架/打仗 (fight-fought-fought)
it seemed/seems that ...似乎.../看起来好像...（it为形式主语）
neither side could双方都不...(neither为“两者都不”)
talk about peace 谈论和平(peace n.和平)
first of all 首先
explain vt.解释 (变形: explanation n.解释)
be angry at...对...感到生气
get vt.过得;理解=understand
What a pity(it is)! 真遗憾！
add vt.增加;补充道
bitter war 残酷的战争(bitter adj.苦的;残酷的)
avoid vt.避免(+sth./+doing sth.)
be avoided 被避免(be done为动词的被动形式)
record vt.记录;记载(be recorded被记录/被记载)
prevent vt.阻止
考点: prevent... (from) doing sth. 阻止...做某事 (介词from可省)