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1、be certain/ be sure
be uncertain about意思是“對……不確定（沒把握）”
uncertain的詞根是certain,意思是“確信的，有把握的”，常用于以下結(jié)構(gòu)：
(1)be certain(sure) to do sth.“肯定會做……”（表示某事將要發(fā)生）。如：
He is certain(sure) to come next Sunday.
(2)be certain(sure) of/ about sth.“確信、有把握”（表示某個(gè)人的思想狀態(tài)）。如：
We are certain/ sure of victory.
(3)名詞從句作主語時(shí)，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眾不同。
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.我對歐洲歷史不太熟悉。
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(yīng)用] 一句多譯
①這些事實(shí)是每個(gè)學(xué)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.
1、be certain/ be sure
be uncertain about意思是“對……不確定（沒把握）”
uncertain的詞根是certain,意思是“確信的，有把握的”，常用于以下結(jié)構(gòu)：
(1)be certain(sure) to do sth.“肯定會做……”（表示某事將要發(fā)生）。如：
He is certain(sure) to come next Sunday.
(2)be certain(sure) of/ about sth.“確信、有把握”（表示某個(gè)人的思想狀態(tài)）。如：
We are certain/ sure of victory.
(3)名詞從句作主語時(shí)，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眾不同。
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.我對歐洲歷史不太熟悉。
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(yīng)用] 一句多譯
①這些事實(shí)是每個(gè)學(xué)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.