英语的选择题1.This is a big class,and_____of the students are girl
3个回答

1 C 英语中分数的表达方法:分子用基数词,分母用序数词,当分子大于1时,分母加S,分子与分母之间可以用连字符"-",也可以不用.如三分之一就是one-third或a-third或one third或a third,而五分之二就是two-fifths或two fifths.

2 B

since的四种用法

1) since +过去一个时间点 (如具体的年、月、日期、钟点、1980,last month,half past six).

I have been here since 1989.

2) since +一段时间+ ago

I have been here since five months ago.

3) since +从句

Great changes have taken place since you left.

Considerable time has elapsed since we have been here.

4) It is +一段时间+ since从句

It is two years since I became a postgraduate student.

as soon as 固定短语 一.就.

until 直到.

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