【知识点详解】
1. 英语翻译技巧：
- 句子翻译注重语境和语法结构，例如"在森林里没有苹果树，但有一些芒果树。"对应的英文是"There are no apple trees in the forest, but there are some mango trees."
- 时间表达："昨天"用"yesterday"，"今天早上"用"this morning"，"每天上午"用"every morning"等。
- 动词时态：一般现在时如"He usually waits for the bus at the bus stop."，现在进行时如"Sam is eating a ladybird from the grapes."。
2. 英语句型转换：
- "用often改写"：将句子变为一般习惯性动作，例如"Are you cooking meat with potatoes?"变为"Do you often cook meat with potatoes?"
- "用now改写"：将句子改为现在进行时，如"He usually waits for the bus at the bus stop."变为"He is now waiting for the bus at the bus stop."
3. 英语疑问句和否定句：
- 使用助动词和否定词构成否定句，例如"Does he often drink water?"的否定回答是"No, he isn't drinking water now."
- 疑问句中，疑问词后跟一般疑问句结构，如"Is your father cleaning the car?"可以改为"Does your father clean the car every week?"
4. 物体存在和状态描述：
- 使用"there be"结构表示某地有某物，例如"There are no tomatoes in the fridge, but there were some yesterday."
- 表示过去存在的事物现在不存在，如"Was there a rice dumpling on the table? No, but there was just now."
5. 英语中的时间状语：
- "在端午节"对应"on Dragon Boat Festival"，节日前使用介词"on"。
- "昨天晚上"用"last night"，"上个星期三"用"last Wednesday"。
6. 动词短语和固定搭配：
- "试穿"用"try on"，"做连衣裙"用"make a dress"，"展示玩具"用"show his toys"，"刷牙"用"brush one's teeth"。
7. 现在进行时态的运用：
- 描述正在进行的动作，如"Yang Ling always brushes her teeth before bedtime."变为"Yang Ling is brushing her teeth before bedtime."
8. 频率副词的应用：
- "always"、"often"、"usually"、"sometimes"用于表示动作发生的频率，如"My friend is always playing games on the Internet."
通过以上分析，可以看出这份文档主要涵盖了英语的翻译练习，句型转换，时态运用，疑问句和否定句的构造，以及动词短语和时间状语的理解和应用。这些都是小学六年级学生在学习英语过程中需要掌握的基础知识点。
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