推荐回答(4个)
打了很多字哦,希望被采纳,呵呵:)
1、当句子使用的是一般过去时的时候,谓语动词用一般过去式。例如:I was a student two years ago .两年前我是一个学生。(这是过去了的事情,于是谓语动词be要变成过去式was);而若是句子使用的是现在完成时或是过去完成时,动词使用过去分词。例如:I have been to the Great Wall once .我去过一次长城。(现在完成时,于是将be 变为have been )
2、若是句子使用的是一般现在时,且主语是第一人称I 、we 、或是第二人称单复数you、第三人称复数they等等,谓语动词都用原形。例如:They play football well 。 另外,动词的ing形式或是不定式to do结构都不可以独立做谓语,一般在句子中作其他成分。例如:I have a lot things to do 。在这里to do 是做补充说明的。
3、This is where your grandfather was born 。这句话里be born 是一个固定搭配,表示“出生”,而出生是以前出生的,所以用一般过去时,将be变为was 。this is 中的is 是“是”的意思!
1.过去时仅仅用来指过去的情况状态,只是相对于现在。过去分词通常强调动作的已经发生。
1. 过去式 只表示动作发生在过去
过去分词 可以用在完成时(完成时表示对现在产生了影响)
也可以用在被动语态中
2. 谓语动词一般由动词的各种时态来体现。
例如:
I (like) walking.我喜欢走路。(一般现在时主动语态)
I (made) your birthday cake last night..昨晚我做好了你的生日蛋糕。 (一般过去时主动语态)
It is used by travelers and business (people all over the world).全世界旅行者和商人都使用它 (一般现在时被动语态)
3. 不能去掉,was 是单人称 is 的过去式,were 是 第二人称are的过去式。
was是过去式表示已经过去的的事物,
像 i was born in 1991.我出生于1991. 表已过去的
他今年19岁,He is 19 years old.表现在
如果用在 This is where your grandfather was born 用is 就严重语法错误
1.一般过去时,用过去式,其余用分词
2.谓语只能用动词原形
3.grandfather是单数,所以用was
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