In the early stages of teaching L-2 the teacher has to focus on:

A second language (L-2) is a language other than one’s first language that is learned for utilitarian reasons because of its direct value to the speaker as a citizen of his own country. 

Key Points

• Second-language acquisition (SLA), second-language learning, or L2 (language 2) acquisition, is the process by which people learn a second language.
• Learning a second language is one of the best ways to keep the brain active and challenged. It opens the window to communicate the knowledge of the world.
• In the early stages of teaching L-2 the teacher has to focus on improving vocabulary by presenting words in a meaningful context.
• The core vocabulary(words) of the first language is learned quite naturally at home. Neither the child nor his/her family has much to say about the words that must be learned - those are given by the immediate environment and the culture. 
• The vocabulary(words) of a second language can thus be decided by the teacher, the textbook, or the school. The development of vocabulary is very important for students.

Hence, in the early stages of teaching L-2 the teacher has to focus on improving vocabulary.

Hint

• A morpheme is the smallest unit of meaning that can't be broken up. Eg- 'un' in the word unable. The teaching of morpheme is not emphasized in early stage of language teaching.
• Inflection is a type of drill in the Audio Lingual Method in which one word in an utterance appears in another form when repeated. Example: He bought the chocolates. - She bought the chocolates.
• In the early stages of teaching L-2 the teacher focuses on the correct order of language skills, i.e., listening, speaking, reading and writing.