介词透过; 经由; 通过，穿过; 凭借
副词从头到尾; 彻底; 自始至终
形容词（电话）接通; 通话完毕; 有洞的; 直达的
1. all through : 一直；
2. through and through : 完全, 彻底；
3. through to : 直到；
副词
1. through
1. They wouldn't let us through.
他们没让我们过去。
形容词
1. through
1. I'll take a through train.
我想搭直达车。
介词
1.
1. We all got through our examinations.
我们考试都通过了。
2. We are through school at five o'clock.
我们五点上完了课。
3. They became unemployed through no fault of their own.
他们的失业不是由于自身的过失造成的。
外企参观
A：Please stop me if you have any question.
有任何问题，请随时叫我停下来。
B：I will.
好的
A：Duck your head as you go through the door there.
经过那儿的门时，请将头放低。
B：Thank you.
谢谢。