【知识点详解】
1. 不定式的基本用法：
- 宾语：如"I'd like to help homeless people."，"to help"在这里是动词"like"的宾语。
- 宾语补足语："She thinks it difficult to carry the heavy box."，"to carry the heavy box"是"difficult"的宾语补足语。
- 形式宾语："It is safe to cross the river by boat."，"to cross the river by boat"是形式宾语，真正的宾语是"it"。
- 形式主语："Mario believes it can help him get his future dream job."，"it"是形式主语，"can help him get his future dream job"是真正主语。
2. 不定式的填空练习：
- 1) "I’d like to help homeless people."
- 2) "She decided to try out for a volunteer after-school reading program."
- 3) "You could ask hospitals to let you visit the kids and cheer them up."
- 4) "Mario believes it can help him get his future dream job."
- 5) "She volunteers there once a week to help kids learn to read."
- 6) "I’m making some signs to put up around the school."
3. 对残疾状态的描述：
- be blind（失明）、be unable to walk（无法行走）、be deaf（耳聋）、be unable to use hands（无法使用双手）：这些表达用于描述不同类型的残疾状况，帮助学生理解如何帮助有特殊需求的人。
4. 动词短语和其含义：
- repair（修理）：如"He put on his gloves and repaired the truck."
- fix（安装，固定）：如"The nail doesn’t fix well."
- fix up（修理）：可以用于修理物品，如"The wheels are turning."
5. 动词短语配对练习：
- run out of（用完）："I’ve run out of it." 和 "I don’t have any more of it."
- take after（长得像）："I take after my mother." 和 "I am similar to her."
- fix up（修理）："I fixed it up." 和 "I repaired it."
- give away（捐赠）："I gave it away." 和 "I didn’t keep it."
6. 使用动词短语造句：
- "I took after my father."（我长得像我父亲。）
- "I gave away my old clothes to the poor kid."（我把旧衣服捐给了那个穷孩子。）
- "I ran out of my money last weekend."（上周末我的钱用完了。）
- "I fix my bike and give it away."（我修理了我的自行车然后捐赠出去了。）
本PPT课件的内容涵盖了八年级英语下册Unit Section B的语法重点，主要涉及不定式的用法、动词短语的理解以及与之相关的造句和词汇应用，旨在帮助学生深入理解和掌握这些基本的英语语法结构，并通过实践提高他们的语言运用能力。
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