My dream is to be a scientist这一句中系动词是dream还是is

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• My dream is to be a scientist这一句中系动词是dream还是is
• 请问如何区分动词不定式作宾语还是作状语啊?是不是有固定用法的,如choose ,want ,等词后的不定式一定为宾语,那么我们是不是把这一部分的词记熟就可以作为判断依据,如果不是这些词,就可以说其为状语啊?还是根据不定式前面的词是不是及物动词来判断,如果是及物的,那它后面的就是宾语是吗?如 My grandmother lived to see the birth of my little daughter.这句中的live 为不及物,所以to see the birth of my little daughter为状语.但是好多动词既是及物又是不及物的,那怎么判断啊.如begin 就是既是及物又是不及物的.如he began to learn english a year ago究竟正确的方法是怎样的?.
• I have a dream这篇文章的原文在“have a dream.”这一系列排比句之前的那句到底是“ I say to you today,my friends,that in spite of the difficulties and frustrations of the moment,I still have a dream.It is a dream deeply rooted in the American dream.”还是“ I say to you today,my friends.And so even though we face the difficulties of today and tomorrow,I still have a dream.It is a dream deeply rooted in the American dream.”
• To be a teacher is my dream.这句话中,是不是动词不定式作主语?如果是,那么这里的动词不定式应该是：to be还是to be a teacher?我刚学英语
• My dream is to be a scientist这一句中系动词是dream还是is
• 1.he came to Taipei to （） a job ,he went from one company to another.A find B look for.请问为什么不能选A?2..(her) sweet words made them very happy .对括号内的提问3.we talk on the Internet as much as we can and i often tell her about my school and my family 请问这一句中 we can 放在此处有什么作用?在we can 后是不是少了一个逗号?4.they had surprising endings.译这个句子5.when i feel worried about something ,i can always go to her .请问worried 在此处是做动词还是形容词?6.Draw a (straightly ) line here with this piece
• be系动词在句中变否定或疑问句后,be动词还是系动词吗?be动词可以作系动词,也可以是助动词.下面这一句中I am a student.的be动词是系动词来说明I 的身份.但有说法是be作助动词构成否定句或疑问句,那变为Are you a student?或I am not a student.中 Be是为助动词还是系动词?
• 助动词be 和系动词be 的区别 在语法书上,非谓语动词的不定式部分介绍说：系动词be+不定式作表语和在语法书上,非谓语动词的不定式部分介绍说：系动词be+不定式作表语和 助动词be+不定式做表语有区别 然后举了例子1.系动词be+不定式作表语：You're not to smoke in the office.He felt excited because he was soon to go abraod travelling.2.助动词be+不定式做表语:My dream is to be a doctor Mary's task is to set the table.但是系动词be+不定式作表语和 助动词be+不定式做表语 这两种形式中,是怎么样区别的be什么时候是助动词什么时候是系动词的呢?请帮忙结合上面的句子分析一下,
• （）的物体具有动能
• PA有哪些意思啊?