Using ます-form inside a (compound, conditional) statement Japanese grammar books say that -form should be used only at the very end of a (compound) statement. So is a correct sentence ending. However googling "" finds lots of matches (348,000 vs. 482,000 for correct variant) which seem to be genuine sentences of native speakers, like > **** Is it a wide-spread colloquialism, or is -form actually allowed at each sub-statement end in a compound?

is understandable, but is an entirely broken expression. You have to say . This kind of broken Japanese may easily happen when, for example, someone who is very nervous has to make a formal speech, but there is no reason one uses this by intention in any kind of situation.