I smoke（嗜好）；I work in London（不變的情況）；London is a large city（真理）
You walk for two hundred meters, then you turn left.
Your exam starts at 09.00.
表達未來的時間，用於特定連接詞之後：after, when, before, as soon as, until
He'll give it to you when you come next Saturday.
He drinks tea at breakfast.
She only eats fish.
They watch television regularly.
We catch the bus every morning.
It rains every afternoon in the hot season.
They drive to Monaco every summer.
Water freezes at zero degrees.
The Earth revolves around the Sun.
Her mother is Peruvian.
Open the packet and pour the contents into hot water.
You take the No.6 bus to Watney and then the No.10 to Bedford.
His mother arrives tomorrow.
Our holiday starts on the 26th March
She'll see you before she leaves.
We'll give it to her when she arrives.
構成現在簡單式：以 to think 為例
|I think||Do I think?||I do not think|
|You think||Do you think?||You do not think|
|He thinks||Does he think?||He does not think|
|She thinks||Does she think?||She does not think|
|It thinks||Does it think?||It does not think|
|We think||Do we think?||We do not think.|
|They think||Do they think?||They do not think.|
在第三人稱單數時，動詞一律以 s 結尾：
he wants, she needs, he gives, she thinks.
否定句和疑問句要用 Does（= 助動詞 Do 的第三人稱動詞變化）+ 不帶 to 的不定詞。
He wants ice cream. Does he want strawberry? He does not want vanilla.
以 y 結尾的動詞：第三人稱動詞要將 y 改為 ies：
fly --> flies, cry --> cries
例外情況：字尾 -y 前面有母音：
play --> plays, pray --> prays
當動詞原型字尾是 ss、x、sh、ch 時，就在字尾加 es：
he passes, she catches, he fixes, it pushes
- He goes to school every morning.
- She understands English.
- It mixes the sand and the water.
- He tries very hard.
- She enjoys playing the piano.