If you can’t see the words written on the blackboard very well,maybe you need ___.A.examini...If you can’t see the words written on the blackboard very well,maybe you need ___.A.examining B.to have you eyes examined 而the garden require _.的答案是watering.require 跟need 算一类词吧,用法一样.那第一题为啥不能选A?主动表被动.
If you can’t see the words written on the blackboard very well,maybe you need ___.A.examini...
If you can’t see the words written on the blackboard very well,maybe you need ___.A.examining B.to have you eyes examined
而the garden require _.的答案是watering.require 跟need 算一类词吧,用法一样.那第一题为啥不能选A?主动表被动.
第一句不需要被动。因为如果用被动,也应该是your eyes,而本题中的主语是you,所以只能用主动方式,need to do sth,
have sth done是固定搭配,让。。。被。。。。, 这里译为:检查你的眼睛(让你的眼睛被检查)
require/need doing 就是用主动表被动, The window needs cleaning. Your hands need washing. 不过也可以用need to be done.替换。
一。need的用法,在做实义动词时,有俩种情况
need to do 需要做某事
need doing 是需要被做有被动的意思
如;
I need to mend my bike.
My bike needs mending
也就说:need to do 一般主语是人 need doing 一般主语是物
在语法上就可以解析出来了··
此外,句子意思:如果你不能很好地看到黑板上写的词,也许你应该去检查你的眼睛了
后边涉及到 have sth done 使被做,就是眼睛被检查
二。 require doing sth需要做某事情(表示的也是被动)
如The roof requires repairing屋顶需要修理了
希望帮到你
第二题:主动表被动,是经常的行为
to have you eyes examined 是不定式做need的宾语,是具体的某次动作,在时间上指将来,而动名词在时间上指一般的行为,故用B.
第一题选A的话 need examining= need to be examined 但句子意思是,检查眼睛,并不是你需要被检查.而B have your eyes examned 让眼睛被检查,更符合题意.need/ require/want doing= need/ want/require to be done 需...
require 跟need 不是一类词。
need是情态动词,其用法是need to do, 所以选B。
require是一般及物动词,可以直接带宾语,其用法是require sth。或者require sb to do sth. 所以watering。
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