英语填空!看补充!When wine was first made,wine makers found that it
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/24 01:33:09
英语填空!看补充!
When wine was first made,wine makers found that it turned sour(酸的) instead of staying sweet.They did not know what to do.
为什么这句"They did not know what to do"要用what to do而不用how to do?可以讲下what to do和how to do的用法吗?
When wine was first made,wine makers found that it turned sour(酸的) instead of staying sweet.They did not know what to do.
为什么这句"They did not know what to do"要用what to do而不用how to do?可以讲下what to do和how to do的用法吗?
what to do是正确的.但是how to do是不对的,必须在do后面加上宾语.
1.what to do和how to do it在英语中被称为“疑问词 + 不定式”结构.
该结构在功能上相当于一个名词短语,在句中一般充当名词所能做的成分,比如主语/宾语/表语等.请看以下例子:
I don't know what to do.what to do做know的宾语
When to hold the meeting hasn't been decided.When to hold the meeting做句子的主语
The problem is how to do it.how to do it做句子的表语
2.该结构可以细分为两种:
1) 疑问代词+不定式 特点:疑问代词要充当不定式中的介词或动词的宾语
如:what to do中what充当do的宾语,即"做什么"
再如:I don't know whom to send this gift to.
whom充当第二个to(介词)的宾语,即to send this gift to whom,"把礼物送给谁"
2) 疑问副词+不定式 特点:疑问副词要充当不定式所表示动作的状语
如:I don't know how to do it.
how充当do it的方式状语
3.如果能掌握上述结构的真正含义,相信大家都能明白:
what to do √ 而what to do it ×
how to do it √ 而how to do ×
4.另附两个特殊用法
1) 该结构经常可以换成名词性从句来表达
如:I don't know what to do.=I don't know what I should do.
I don't know how to do it.=I don't know how I can do it.
2) 表达"是否该做某事" 只能用whether to do sth而不能用if to do sth
如:I don't know whether to finish my work first
1.what to do和how to do it在英语中被称为“疑问词 + 不定式”结构.
该结构在功能上相当于一个名词短语,在句中一般充当名词所能做的成分,比如主语/宾语/表语等.请看以下例子:
I don't know what to do.what to do做know的宾语
When to hold the meeting hasn't been decided.When to hold the meeting做句子的主语
The problem is how to do it.how to do it做句子的表语
2.该结构可以细分为两种:
1) 疑问代词+不定式 特点:疑问代词要充当不定式中的介词或动词的宾语
如:what to do中what充当do的宾语,即"做什么"
再如:I don't know whom to send this gift to.
whom充当第二个to(介词)的宾语,即to send this gift to whom,"把礼物送给谁"
2) 疑问副词+不定式 特点:疑问副词要充当不定式所表示动作的状语
如:I don't know how to do it.
how充当do it的方式状语
3.如果能掌握上述结构的真正含义,相信大家都能明白:
what to do √ 而what to do it ×
how to do it √ 而how to do ×
4.另附两个特殊用法
1) 该结构经常可以换成名词性从句来表达
如:I don't know what to do.=I don't know what I should do.
I don't know how to do it.=I don't know how I can do it.
2) 表达"是否该做某事" 只能用whether to do sth而不能用if to do sth
如:I don't know whether to finish my work first
英语填空!看补充!When wine was first made,wine makers found that it
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