开派对

A, an and some 的用法

以元音字母 (a, e, i, o, u) 开头的可数名词需用冠词 an。例如：
Each person will get an apple. 
I'd like an ice cream, please. 
Can I have an orange?  
 
以辅音字母（字母表中所有其他字母）开头的可数名词需用冠词 a。例如：
I'd like a bottle of Coke, please. 
I want to eat a pizza. 
 
不可数名词需用量词 some（在陈述为肯定句，而非问句时）。例如：
There will also be some water and some tea. 
There will be some bread and wine at the party. 
 
如果陈述为否定句或问句，应使用 any。例如：
Will there be any wine at the party? 
I can't buy a birthday present. I don't have any money.

提出建议和提供意见

提出建议的两种简单方式为：
 
Let’s + 动词（原形）
Let's buy her a CD!
 
Why don't we + 动词（原形） 
Why don't we buy her some clothes?
提供意见的一种方式是：
Would like to do + 某事
注意，肯定陈述句中使用了缩写形式 I’d like to：
A: What would you like to do?
B: I'd like to give her a DVD.