又来麻烦你了.我现在初三,初二英语没好好学.有些东西不懂.比如什么是及物动词,不及物动词,还有些基本的时态不懂.比如什么时候用现在完成时,什么时候用过去时,特别是宾语从句的时态,我一直搞不太清楚,想请你讲一下..

问题描述:

又来麻烦你了.我现在初三,初二英语没好好学.有些东西不懂.
比如什么是及物动词,不及物动词,还有些基本的时态不懂.比如什么时候用现在完成时,什么时候用过去时,特别是宾语从句的时态,我一直搞不太清楚,想请你讲一下..

您好!

英语中按动词后可否直接跟宾语,可把动词分成及物动词和不及物动词.
及物动词(vt.),顾名思义,就是可以+物(就是宾语啦)的动词.
比如:
see +sth ,他就是及物动词啊.
hear+sth 这也是,如此类推即可.
当然也有一些又是及物动词,有事不及物动词,这样的词语就不用管他,只要记住固定词组就好.
例如:talk sth talk to sb,这样的词很灵活的
不及物动词(vi):就是后面不能直接+宾语的,要通过介词(of,to,for等)才能+宾语.
比如:look at sth,必须要有at才能加sth,否则就是错滴.

至于什么时候用现在完成时:
for + 时间段;since + 时间点
They have lived in Beijing for five years.
They have lived in Beijing since 1995.
I have learned English for ten years. 这样的句子要用现在完成时.

常见的不确定的时间状语:lately; recently, just, already, yet, up to now; till now; so far, these days, Has it stopped raining yet ?
这也是现在完成时的标志.
考点三:在表示“最近几世纪/ 年/ 月以来……”时间状语中,谓语动词用现在完成时. in the past few years/months/weeks/days;over the past few years; during the last three months; for the last few centuries, through centuries; throughout history 等 考点四:表示“第几次做某事,”或在 “It is the best (worst, most interesting ) +名词 +that” 后面跟现在完成时. This is my first time that I have visited China. This is the most interesting film I have ever seen. That is the only book that he has written.