祈使句用以表达命令，要求，请求，劝告等。 1） 祈使句有两种类型，一种是以动词原形开头，在动词原形之前加do (但只限于省略第二人称主语的句子)。 Take this seat. Do be careful. 否定结构：...

1. hundred, thousand, million 与数字连用，表示一定量的具体数字，不用复数，但表示不定概念可用复数例：three hundred people, millions of people例：7点 seven o'clock, 7:20 seven twenty...

一般说来，admit表示“许入”、“进入”（allow somebody orsomething to enter）或“承认”（acknowledge）的意义；admit of则表示“容许”（allow of）或“容有”（leaveroom for）之意。例如...

一、 so作代词时，用来表示前面提到的相同的人，物，事情或情况，常构成下列句式。The boy died and a week later so did his sister.I am an English teacher.So is my wife .但若前面所提到的...

3. 邀请参加生日聚会邀请参加生日聚会英文邮件范文1Dear Louise,I sincerely invite you to join my birthday party!It's my 18th birthday. I am going to have a huge birthday cake and we h...

1. 表示时间、条件、方式、让步或伴随情况，通常用现在分词或过去分词；若句子主语与非谓语动词是主动关系，用现在分词；若句子主语与非谓语动词是被动关系，用过去分词或现在分词分词的被动式...

while有当 ... 的时候;虽然;尽管;然而等意思。while的用法：while的用法1：while用作连词时,表示“在…(过程)中,在…期间”。常用来引导时间状语从句,当主句的主语和while所引导的从句的主语一...

feed your mind 充实你的思想since the pre-historic times, man has had an urge to satisfy his needs. be it hunger, shelter or search for a mate, he has always manipulated the circums...

1. 表示“人”，是一个只表示复数意义的可数名词（注意不用词尾-s），可以说 some people（一些人），many people（许多人）等，但不能说 a people 或 one people。 The Chinese are a har...

She is very like her mother. 她很像她母亲。This machine is very out of date. 这台机器已经很过时了。The play is very near the end. 戏很快就要结束了。This company is badly in need of...