When/While (I was) on my way to shelter,I met her.
If （it is） properly educated,childwill become eccentric.
Once (you are) caught cheating in an exam, youwill be punished.
He was happy, though/although (he was) poor.
Whether (she is) sick or well, she isalways cheerful.
Yet, whether (they are) recognized ornot, they will usually determine the long-term population density.
④as if，as though引导的方式状语从句
He rubbed his eyes and yawnedas if/though (he was) waking up after a longsleep.
Check is easier to carry than cash (is).
I have as much as confidence inyou as (I have confidence) in him.
The man(that/who/whom) you visited last night is my grandpa.
I don’t like the way (in which/that) you treat the girl.