Question

英语选择题 请说明下语法或原因

the boy wanted to ride his bike ,but his mother told him (?)我觉得没答案啊这题
a:not to
b:not to do
c:not do it
d:do not to

she can't help (?)the house because she's busy making a cake
a:to clean
b:cleaning
c:to cleaned
d:to cleaning

the thief stole into the house ,(?)by the owner
a:only to be caught
b:only being caught
c:having been caught
d:caught

(?)a teacher,we should set a good example to students
a:being
b:having
c:to be
d:to have been

Answer 1

a，这是把not to do it中的do it 省略了
a，这里并不是can't help忍不住做某事的意思，而是不能帮助做某事了，所以要接to do sth
a，表示结果被主人抓住了，因为be caught是发生在stole into 之后，所以要用表示将来意思的不定式，只能选a
a，be与句子主语是主动关系，来说明we 的身份，所以用ing形式即可

Answer 2

a not to do it(it 指先前的ride the bike 可省)所以是not to do
a can't help 根据后句 做蛋糕太忙了 所以她不能帮忙打扫卫生 所以是 can't help to clean
d stole 是过去时 有选项看 A是表示 to be 将要 being caught表示现在正被抓住 C 表示已经正被抓住了 D 是过去表被动 主语是the thief 后句就省略了 所以是the thief caught by the owner
a being 是作为现在 having 少系动词 tobe 将要 to have been 这个...
由should 可知 由BEING 分词引导句子 意思就对了

Answer 3

1,a tell sb (not)to do,这里 do是可以省略的
2.a can't help to do 是不能帮忙做某事，如果加doing则是情不自禁做某事；本题是前者。
3.a. 不定式表示结果，发生主句谓语之后。
4.a 。作为一名老师我们应该为学生树立好的榜样。现在分词做状语，和主语有主谓的关系。b是有的意思，c是表示将来。d 是完成式强调发生在主句谓语之前，一般也不放在句首

Answer 4

D加上do表强调
B习惯用法help doing
D前后一致
Abeing a xxx 作为一个xxx

Answer 5

全选A