681 too,also和either
① too表示“也”时,通常用于肯定句,比also更通俗,同also,as well可换用,可放在句中,也可放在句尾。
② also用于肯定句,表示一个人的两种情况,或两个人的同样情况,常位于be动词、助动词或情态动词之后,行为动词之前,不居句尾。
She is good at maths. He is also good at maths. 她擅长数学,他也擅长数学。
Li Ming went to Paris and Zhang Hong,too,went to Paris. 李明去了巴黎,张红也去了巴黎。
I am a student. He is a student,too.
I am a student. He is also a student. 我是个学生,他也是个学生。
I like English and she likes English,too.
I like English and she also likes English. 我喜欢英语,她也喜欢英语。
Will she also come?
Will she come,too?她也将来吗?
③ either用作副词时,也表示“也”,通常用于否定句中,放在句尾,前面可用逗号,也可不用。either也用于否定疑问句中。
He didn't come and she didn't either. 他没来,她也没来。
If you don't go there,I won't go,either. 如果你不去那里,我也不去。
He can't answer the question and I can't,either. 他不能回答这个问题,我也不能。
Haven't you read the book either?你也没读过这本书吗?
Don't you speak English either?你也不讲英语吗?
He did not come,and she did not come also.
He did not come,and she also did not come.
He did not come,and she did not come either.
提示
①在表示建议或邀请的句子中,如果是以否定形式表示肯定意义,用too,而不用either。
Wouldn't you have a cup of tea too?您也来杯咖啡好吗?(=Please have a cup of tea too.)
Won't you join us,too?你也来加入我们吗?(=Will you please join us,too?)
②在表示否定意义的否定句中,助动词前可用too,而不用either,这种结构可用not…either改写。
I didn't go to the meeting,and he too didn't go. 我没有去参加会议,他也没去。(可改写为:…and he didn't go either.)
③在表示规劝、责备、抱怨的修辞性问句中,如果句子本身的否定形式表达肯定意义,用too,而不用either。这类句子可用should,had better等改写成肯定形式。
Don't you know I am short of money,too?你难道不知道我也没有钱吗?(=You should know…)
Can't you see I've got teeth,too?你难道看不出我也有牙齿吗?
④反意疑问句中的陈述句部分为肯定式时,用too,而不用either,不受附加问句的影响。
He passed the entrance examination too,didn't he?他也通过了入学考试,是吗?