To express surprise at how much of something there is in Spanish we use cuánto, cuánta, cuántos, cuántas in front of the noun, in the same way as in interrogative sentences.
Have a look at the following examples:
Notice how cuánto agrees in gender and number with the noun it modifies.
To see other uses of cuánto see also:
- Using Cuánto + verb in exclamations about quantities
- Using Cuánto + noun to ask how much/how many (interrogative adjective)