Even though one did not yet recite Birchos Hatorah, one may say along with the tzibur the first pasuk of Krias Shema, Kedusha (except ימלוך), Kadish, Borchu, and the 13 midos of Hashem. If the zman for Krias Shama is almost over, then one can even say the entire Krias Shema before reciting Birchos Hatorah.