What morphological interference and give examples?

Morphological interference occurs when the morphological rules or structures of one language influence the use of another language, often seen in bilingual speakers. For example, a Spanish speaker might mistakenly apply Spanish pluralization rules to English, saying "mouses" instead of "mice." Another instance could involve a speaker using the Spanish verb conjugation patterns when speaking English, leading to phrases like "I have 20 years" instead of the correct "I am 20 years old." This interference highlights the blending of linguistic structures from different languages.