2022年初中英語：數詞加減乘除的表示法

數詞加減乘除的表示法

1. “加”用plus，and或add表示;“等于”用is，make，equal等詞表示。

2+3=? 可表示為： How much is two plus three?

2+3=5

Two plus three is five.

Two and three is equal to five.

Two and three make five.

Two added to three equals five.

If we add two to/and three, we get five.

二加三等于五

2. “減”用 minus或 take from表示

10-6=?　How much is ten minus six?

10-6=4

Ten minus six is four.

Take six from ten and the remainder is four.

Six (taken) from ten is four.

十減去六等于四

3. “乘”用time(動詞)或multiply表示

3X4=? How much is three times four?

3X4=12

Three times four is/are twelve.

Multiply three by four，we get twelve.

Three multiplied by four makes twelve.

三乘以四等于十二

4. “除”用divide的過去分詞形式表示

16÷4=? How much is sixteen divided by four?

16÷4=4

Sixteen divided by four is four.

Sixteen divided by four equals/gives/makes four.

十六除以四等于四。

五、分數表示法

1. 分數是由基數詞和序數詞一起來表示的�；鶖翟~作分子，序數詞作分母，除了分子是“1”以外，其它情況下序數詞都要用復數形式。

3/4 three fourths或 three quarters

1/3 one third或a third

24/25 twenty-four twenty-fifths

3 1/4 three and one fourth或 three and one quarter

1/2 a half

1/4 one quarter或a quarter

1 1/2 one and a half

1 1/4 one and a quarter

2. 當分數后面接名詞時，如果分數表示的值大于1，名詞用復數;小于1，名詞用單數。

1 1/2 hours 一個半小時(讀作 one and a half hours)

2 3/4 meters 二又四分之三米(讀作two and three-fourths meters)

4/5 meter 五分之四米

5/6 inch 六分之五英寸

3. 表示“n次方”的說法：指數用序數詞，底數用基數詞。

10的7次方 the seventh power of ten(ten to the seventh power)

6的10次方 the tenth power of six(six to the tenth power)

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