1开头加“an”词
English orange
Ice-cream Old
Air-conditioner End
Umbrella Engineer university
Eraser Apple
eye Elephant
ear actress
uncle Accountant
Ant aunt
Actor Artist
……初中里这些很多，以a e i o 打头的基本都是，以u打头若发音为【ju】则不是，发音为【a】等则是
=========================【二】=========
最常见的不可数名词有：advice, baggage, change(零钱), furniture, hair, homework, information, knowledge, luggage, money, news, progress, traffic weather，fun（有趣的事）trouble，experience,
2、其它不可数名词还有：absence, age, anger, courage, energy, equipment, failure, fear, food, fun, health, ice, industry, kindness, labour, luck, marriage, music, nature, paper, peace, pleasure, power, pride, rain, research, respect, safety, salt, sand, silence, sleep, strength, snow, technology, time, trade, transport, travel, trust, truth, waste, water, wealth, weather, wind, work（工作）
另外，有些集合名词也是可数中词，但不同的是，它们以单数形式出现，表示复数概念，如 people， police， family 等；而有些可数名词本身就以复数形式出现，如 clothes， glasses （眼镜）等；有的可数名词单、复数形式相同，如 Japanese， sheep， Chinese 等。
============================【三】====
在英语中，某些动词后面只能跟动词不定式作直接宾语。你只要记住了这句话，就有助你记住这些动词了：“我和我的爸爸妈妈”。这句话里的每个字也可以代表这些动词的第一个字母:W H W D E P P M M A
我—W want （想要）\ 和—H hope (希望）\ 我—W wish (希望）\ 的—
DE decide (决定） expect （期望）\ 爸爸—PP promise (允诺） pretent （假装) \ 妈妈—M M A mean （打算） manage （设法） agree (同意）.
这个口诀是在网上找到的。我认为英语中后面若接动词必加动词不定式的，这类词有很多很多，不赞成记忆“可跟动词不定式”这类词，因为太多。建议把后面跟“动词原形”以及“动词ing”两类简单记忆下
==============================【四】
一）固定结构：
1. allow doing (区别：allow sb. to do sth.)
2. keep doing
3. keep /carry on doing
4. keep sb. doing
5. enjoy doing (He enjoys nothing but playing the computer.)
6. finish doing
7. be afraid of doing
8. be worth doing (This piece of music is worth listening to.)
9. be busy doing (They are busy getting ready for the New Year’s Eve.)
10. be/get/become used to doing （We are used to living in the countryside. ）
11. dislike doing (She dislikes doing housework.)
12. how about doing//what about doing
13. spend some time (in)doing
14. spend some money (in) buying
15. feel like doing
16. stop/keep/prevent … from doing
17. thank you for doing
18. thanks for doing
19. do some cooking/cleaning/reading/shopping/washing
20. go swimming/fishing/shopping/skating/boating
21. mind doing
22. prefer doing … to doing…
23. practise (practice) doing (He practices speaking English every day.)
24. can’t help doing
25. have fun/difficulty/trouble/problem doing sth.
26. waste time/money doing
27. instead of doing
28. miss doing
29. look forward to doing期望（渴望）做某事 (I'm looking forward to getting your letter.)
30. thank…for doing
31. leave sb./sth. doing (His parents leave his staying at home on weekend.)
二）need, require, want译作“需要”时，跟动词-ing作宾语，主动表示被动，相当于to be done，如：
1.The windows require cleaning. （The windows require to be cleaned. ）
2.The patient needs operating on at once.(The patient needs to be operated on. ）
3.The flowers want watering. （The flowers want to be watered. ）
get down to(着手干……)，lead to (通向，导致)，object to(反对)，pay attention to (注意)，look forward to (盼望)，be used to (习惯于)，stick to (坚持)，prefer …to …等。
另外，介词后面接动词ing 形式，如in on at for of by ……after，befor between……很多介词，不一一列举
好了，如果还有其他需要请补充问题吧！我今年参加完中考，愿意为你解答
祝安！
==================【关于补充的问题】==
——那元音字母都是以元音音素开头的吗?
不一定。比如说university这个单词，是以元音字母u开头的，但不是以元音音素开头的，所以用冠词a
再例如，an hour 虽然以h开头，但h不发音，第一个因素就是元音。再或者，this is an “h”
关键是音标，不过，笼统点说，a/e/i/o开头的基本都需要an，U是例外。确切说是看该单词的首个音标，如果是元音就用AN，其余用A。
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