Here is a Guide on how they should develop speech and language skills of a child of:
18 months old
-You can say 'No'
-Use 10 or more words
-Understands the names of familiar objects (e.g., \'dog\', \'ball\', \'bed\', \'car\')
-Answer the question "what is this?"
-Understand simple commands
Two years old
-You can use a large variety of consonants
-Points to some parts of the body when named
-Use two-word combinations (e.g., "more cookies," "Daddy left")
-Enjoy listening to stories
-You can name some photos in stories
-Has a vocabulary of at least 50 words.
-Can sing simple songs or children's songs
Three years old
-Correctly produces the sounds made by the letters p, b, m, w, t, d, n, g, h, and
-Pronounce the final consonant in one word
-Can follow a two-part instruction (e.g., "Go to the kitchen and get your juice")
-You can participate in short conversations.
-Puts three or more words together in a sentence
-Ask \"because?\"
-You can talk about something that happened yesterday or last week.
-You are using basic grammar
Four years old
-Speak in complete sentences
-Use adult grammar
-He asks a lot of questions
-Answer questions of "who", "how", "how many"
-Tell stories that you can easily follow
-Use language to create imaginative games with others.
Five years old
-Explain how it can be done use an object.
-Answer the questions "when" and "why"
-Use language to talk about past and future events.
-Participate in detailed conversations.
-Has little trouble thinking of what to say
-It doesn't have too many difficulties to learn to read.
If your child develops a stutter at any age, early intervention by a speech therapist is not only highly recommended, but also very effective in helping them overcome the problem.
If school-age children show signs of feeling frustrated Because they have trouble understanding or communicating or avoid speaking, an evaluation by a speech pathologist would be advisable.