'请看下面一道题：When you read the book, you’d better make a mark _________ you have any questions.A. at which B. at where C. the place where D. where ...'

'请看下面一道题：His lecture was difficult and I didn’t know _________ he said meant in his lecture.A. that B. what C. that that D. what what 许多同学...'

'请看下面一道题：I won’t go there alone, and I’ll take _________ wants to go.A. anyone B. who C. whoever D. what 【分析】此题应选 C，容易误选 A 或B，...'

'“the+形容词”结构若用于表示性质或特征相同的一类人，则通常具有复数意义。如：The rich are not always happier than the poor. 富人不一定总比穷人幸福。类例...'

'英语中要表示“一两个……”，有两种常用表达，一是“a+名词(单数)+or two”，二是“one or two+名词(复数)”，注意两者不可混用(尤其注意不能将( a 与 one 用...'

'曾有这样一道高考题：“Have you seen _________ pen? I left it here this morning.” “Is it _________ black one? I think I saw it somewhere.”A. a, the B...'

'不定冠词的省略与重复 (1) 在不引起误会的情况下，两个并列名词中的后一个名词前的不定冠词可以省略。如：The noun is the name of a person or thing. 名词是人...'

'一、频度副词的特点FONT face=宋体>频度副词表示动作发生的次数，常见有的ever, never, rarely, seldom, once, often, occasionally, constantly, frequently,...'

一、表示整十的基数词用复数形式可以表示人的岁数或年代。如：in the sixties 在60年代in one’s thirties 在某人30多岁时 二、基数词转化为名词，可用复数形式。如：How many twos are there in ...

'一、基本用法分数由基数词和序数词构成——分子用基数词，分母用序数词，分子超过“1”时，分母用复数。如：a sixth(1/6), two thirds(2/3), three fifths(3/5)...'