[助動詞] 能, 會, 可能會, 可以. (can 的過去式)

I was so tired that I could not do my homework.

我太累了以致於沒辦法做 (我的) 家庭作業.

It could be weeks before we know the real story of this event.

可能要過好幾個星期我們才能瞭解這個事件的真相.

[動　詞] 吃(東西), 喝, 進食, 用膳.

I can not eat any more.

我吃不下了.

I am so hungry that I could eat a horse.

我餓得可以吃下一匹馬. [用來形容非常饑餓]

[動　詞] 吃(東西), 喝, 進食, 用膳. (eat 的過去分詞)

I have not eaten lunch yet.

我還沒有吃午餐.

It is said that the little boy has been eaten by a tiger.

據說那個小男孩被一隻老虎吃掉了.

[名　詞] 八, 八個.

At the age of eight, she began to learn English.

她在八歲時開始學英文.

[形容詞] 八的, 八個的.

Please come here before eight o'clock.

請在八點 (鐘) 之前到這裡.

[名　詞] 十八, 十八個.

Two times nine is eighteen.

二乘九是十八.

[形容詞] 十八的, 十八個的.

There are eighteen students in the classroom.

這教室裡有十八個學生.

[名　詞] (與 the 連用)第八(個), 八分之一.

He was the eighth to arrive that island.

他是第八位到達那島上的人.

[形容詞] 第八的, 第八個的.

She gave up on the eighth day.

她在第八天放棄了.

[名　詞] 八十, 八十個, 八十人.

I was born in nineteen eighty.

我出生於 1980 年.

[形容詞] 八十的, 八十個的, 八十人的.

The train is eighty minutes late.

這班火車慢了八十分鐘.

[介系詞] 為了..., 對於….

This hat is a little too small for me.

這帽子對我來說是小了些.

[連接詞] 因為, 由於.

Mary did not go to school yesterday, for she was sick.

瑪麗昨天沒有去上學, 因為她生病了.

[名　詞] 力量, 武力, 暴力.

You must use force to open that bottle.

你必須用力才能打開那個瓶子.

[動　詞] 強迫, 用力推進, 強行攻佔.

Don't force the child to eat.

不要強迫這小孩吃東西.

[名　詞] 四十, 四十個.

She moved to America at the age of forty.

她在四十歲時移居美國.

[形容詞] 四十的, 四十個的.

We have forty students in our class.

我們的班上有 40 個學生.