When employing infinitives with do and does, it is vital to take into account that DO is The bottom type of the verb, whilst DOES may be the 3rd-human being singular sort. Here are several examples:飲料水は、必ず煮沸したものを飲むか、ミネラルウォーターを利用すること。→ was macht es schon, wenn …?; what differe