The sentence pattern of ‘the boy opened wide his mouth’ is

derivational suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

compound words cannot be separated by any segment of language

each component of compound words cannot perform a separate grammatical function

a component of a compound word cannot participate in a grammatical structure

simple

compound

joining two or more words together

joining two or more morphemes together

mixing two words into one

annexing prefixes to a base

adding suffixes to a base

adding affixes to a base

combining different parts of 2 words

picking up the initials of a series of words

cutting off the suffixes of a word

joining two or more words together

cutting off parts of two words

adding affixes to the stem

using the initials of a series of words

cutting off parts of two words

adding affixes to the stem