possible - possibly-possibility

nine- ninth ... five -fifth , true - truth ...

describe - description / destroy - destruction...

1.broadcast (broadcast, broadcast) 广播

2.flee (fled, fled) 逃跑

3.forbid (forbade, forbidden) 禁止

4.forgive (forgave, forgiven) 原谅

5.freeze (froze, frozen) 结冰

6.hing (作“绞死”讲，是规则的；作“悬挂”讲，其过去式过去分词都是hung)

7.lie (作“说谎”讲时，是规则的；作“位于”讲时，其过去式是lay，过去分词是ain)

8.seek (sought, sought) 寻求

9.shake (shook, shaken) 发抖

10.sing (sang, sung) 唱歌

11.sink (sank, sunk/sunken) 下沉

12.spread (spread, spread) 传播

13.swim (swam, swum) 游泳

14.tear (tore, torn) 撕碎

15.weave (wove, woven) 编织

5. 注意形容词变名词时的拼写变化

1.long—length 长度

2.wide—width 宽度

3.high—height 高度

4.strong—strength力量

以-ic结尾的动词，应先把-ic变为-ick，再加ing或ed

1.picnic (picnicked, picnicking) 野餐

6. 注意动词变名词时的拼写变化 2 panic-paniked

1.succeed—success成功

2.pronounce—pronunciation 发音

3.explain—explanation解释

4.decide—decision 决定

5.enter—entrance进入

6.permit—permission 允许

7.refuse—refusal 拒绝

8.consider—consideration 考虑

9.discover—discovery 发现

10.bury—burial 埋葬

11.conclude—conclusion 得出结论

12.arrive—arrival 到达

13.weigh—weight 重量

六、以下动词加-ed或-ing要双写最后一个字母

regret (regretted, regretting) 后悔 control (controlled, controlling) 控制admit (admitted, admitting) 承认 occur (occurred, occurring) 出现prefer (preferred, preferring) 宁愿refer (referred, referring) 提到forget (forgetting ) 忘记 permit (permitted, permitting)允许equip (equipped, equipping) 装备

七、注意动词变名词时的拼写变化

succeed—success成功 pronounce—pronunciation 发音 explain—explanation解释

decide—decision 决定 enter—entrance进入 permit—permission 允许

refuse—refusal 拒绝 consider—consideration 考虑 discover—discovery 发现

bury—burial 埋葬 conclude—conclusion 得出结论 arrive—arrival 到达

八、注意形容词变名词时的拼写变化

long—length 长度 wide—width 宽度 high—height 高度 strong—strength力量

九、个别名词的复数拼写 German (Germans) 德国人，gulf (gulfs) 海湾， handkerchief (handkerchiefs) 手帕，roof (roofs) 房顶，stomach 胃 (其复数是stomachs而不是加es)

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