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Final answer:
The 'telegraphic stage' or 'two-word stage' is the L1 stage when children begin to use simple sentences, typically around two years of age, which follows the babbling and one-word stages. In this stage, children combine words to form sentences that convey more complex meanings, though these sentences often lack complete grammatical structure.
Explanation:
The L1 stage associated with beginning to use simple sentences is typically referred to as the 'telegraphic stage' or 'two-word stage' of language development. This stage often occurs around the age of two years, following the earlier babbling and one-word stages. In the telegraphic stage, children start to combine words to form simple sentences such as “Daddy go” or “More juice,” which convey a more complex meaning than single words. These early sentences usually lack grammatical elements like articles, conjunctions, and prepositions but do include the most critical content words that convey the intended message.
Acquiring the ability to use simple sentences is a remarkable step in language development. It supports the child's ability to communicate about their needs, express ideas, and interact more effectively. As language development progresses, children's sentences become more complex, often including essential syntax like verbs and subjects that agree, correct use of punctuation, and the ability to add descriptive information.