? [析] 大于30分钟时不要使用past,而要用差多少不到几点的to来表达。
? [误] Three time three is nine.
? [正] Three times three is nine.
? [析] times 此处作为乘讲一定要加s。 ?英语中乘除法表达式如下:
算法 种类 例 句
加法 一般 Five and six is eleven.
正式 Five plus six is (equals) eleven.
减法 一般 Eight take away four leaves (is) four.
Four from Eight leaves (is) four.
正式 Eight minus four equals (is) four.
乘法 一般 Three fours are twelve 34=12
正式 Three times four equals (is) twelve.
一般 Two in to four is two.
正式 Four divided by two equals two.
(三) 例题解析
?1? - How many students are there in your school, Mike?
?- There are over ___ students in our school.
?A. two thousands
B. two thousands of
C. two thousand
D. two thousand of
? [答案] C.
? [析] 有基数词在前面时thousand, hundred 等词不能加s,也不能加of结构,只有在thousands of时才可以使用。
?2? John lives on ___ floor. He doesn't use a lift to go up and down.
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