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

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
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
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 需要被...
have sth done 让...被做...
不懂追问!

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,

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。
祝你学习愉快！ (*^__^*)
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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

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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

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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。