Spanish Stem Changing Verbs

Explanation
Entender is the correct answer because it is a stem-changing verb in Spanish. The stem of the verb "entender" changes from "e" to "ie" in the present tense, so it becomes "entiendo" for the first person singular. This verb means "to understand" in English.

Explanation
The word "aprender" is not a stem changing Spanish word because it does not undergo any vowel change in its stem when conjugated. Stem changing verbs in Spanish, also known as boot verbs, undergo a vowel change in the stem of the verb when conjugated in certain forms. However, "aprender" remains the same in all its conjugations, making it not a stem changing word.

Explanation
A stem changing verb, also known as a shoe verb, is a verb that undergoes a change in the stem vowel in certain conjugations. In this case, the stem changing verb is "fregar". When conjugated, the stem vowel "e" changes to "ie" in the present tense for the pronouns "tú" and "usted". For example, "tú friegas" (you wash) and "usted friega" (you wash). This change in the stem vowel distinguishes "fregar" as a stem changing verb among the given options.

Explanation
The correct answer is "Hervir." In Spanish, "hervir" means to boil. It is a stem-changing verb, where the e in the stem changes to ie in the present tense conjugations. This verb is commonly used when referring to the action of boiling water or cooking food at high temperatures.

Explanation
Encender is a stem changing verb because it undergoes a vowel change in the stem when conjugated. In the present tense, the letter "e" in the stem changes to "ie" in the second and third person singular forms (tú and él/ella/usted). For example, "yo enciendo" (I turn on), "tú enciendes" (you turn on), and "él/ella/usted enciende" (he/she/you formal turn on). This change in the stem distinguishes encender from regular verbs and makes it a stem changing verb.

Explanation
The verb "lavar" is not a stem-changing verb because it does not undergo any changes in the stem when conjugated. Stem-changing verbs, on the other hand, experience changes in the vowel of the stem in certain conjugations.

Explanation
Contar is the correct answer because it means "to count" in Spanish. The stem-changing verb "contar" undergoes a stem change in the present tense, where the o in the stem changes to ue. This means that in the present tense, the conjugations of "contar" are yo cuento, tú cuentas, él/ella cuenta, nosotros contamos, vosotros contáis, and ellos/ellas cuentan.

Explanation
The stem changing verbs in Spanish undergo a change in the stem vowel in certain conjugations. In the case of "beber," there is no stem change. The stem remains the same throughout all conjugations, making it the only word in the given options that is not a stem changing verb.