點擊添加圖片描述（最多60個字）編輯

1、be certain/ be sure

be uncertain about意思是“對……不确定（沒把握）”

uncertain的詞根是certain,意思是“确信的，有把握的”，常用于以下結構：

(1)be certain(sure) to do sth.“肯定會做……”（表示某事将要發生）。如：

He is certain(sure) to come next Sunday.

(2)be certain(sure) of/ about sth.“确信、有把握”（表示某個人的思想狀态）。如：

We are certain/ sure of victory.

(3)名詞從句作主語時，一般多用certain.

It is certain that he will come.

2、be different from 與……不同

Your idea is different from mine. 你的想法和我的不同。

對比：make sb./ sth. different from使某人/某物不同于……

Her special accent makes her different from others. 她特殊的口音使她與衆不同。

3、be familiar with/be familiar to

be familiar with的主語是有生命的事，意為“某人對人、事熟悉”；be familiar to的主語是無生命的事物，意為“某人/事為某人所熟悉”，對比:He is very familiar with the names of plants in English.他很熟悉植物的英語名稱。Suzhou and Hangzhou are familiar to many foreigners.蘇州和杭州為許多外國人所熟悉。

I’m not familiar with European history./European history is not familiar to me.我對歐洲曆史不太熟悉。

注意：be familiar with/to 還表示“精通、通曉”

如：French is as familiar to him as English.他對法語就象對英語一樣精通。

[應用] 一句多譯

①這些事實是每個學生都熟悉的。

②她精通4種語言。

Key:①These facts are familiar to every schoolboy./Every shoolboy is familiar with these facts.

②She is familiar with four languages./Four languages are familiar to her.

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