Theme 1.  Sentence. Helper words. Getting to know the marks at the end of a sentence

In the theme you learn:
• You will learn what a «sentence» is and how many words it can have;
• You will find out that the first word in a sentence always starts with a capital letter, and at the end of a sentence we put punctuation marks: a full stop, a question mark, an exclamation mark;
• You will get to know helper words in a sentence.