In the 19th century, Yukichi Fukuzawa, one of the greatest Japanese politicians and philosophers, wrote during his studying abroad:
"Language is a tool. It is like a hammer when you build a house."
The question is whether the usage of this "when" is correct (I mean, can the "when" act as "with which" or something like that?)
If yes, I'm glad if you show me some sample sentences using "when" of this usage.
If no, please let me know why it is wrong.
Oops! Note that I know these similar sample sequences: "I will never forget the time when we first met." "I can imagine his astonishment when she asked him to marry her." "This is a picture when I went to Paris."