# 實意動詞的否定
使用助動詞進行否定
在助動詞`do does did`后面加`not`
```
一般現在時 do does(主語是單三人稱)
一般過去時 did (過去時沒有單復數的區分)
do not = don't
does not = doesn't
did not = didn't
```
```
I don't go to school by bus.
She doesn't watch TV everyday.
They didn't swim last night.
```
# 實意動詞的提問
使用助動詞進行提問
提問時，助動詞位于句首，實意動詞如果原本發生了時態上的變化，則需要變回原型
```
He often plays golf.
Does he often play golf?
Yes,he does./No,he doesn't.
They go to school by bus.
Do they go to school by bus?
Yes,they do./No,they don't.
Sam had breakfast yesterday.
Did sam have breakfast yesterday?
Yes,he did./No,he didn't.
```
