A sentence begins with a Capital Letter, A Capital Letter is a letter that's big, A Capital Letter is NOT a small letter, A Capital Letter is big big BIG! A sentence ends with a Period, Or an Exclamation or a Question Mark, A sentence always ends with a Period, Or an Exclamation or a Question Mark So, "My dog is great." is a sentence, The M is a capital, yeah that's right, So "My dog is great." is a sentence And it ends with period that's right! So, "Do you like bugs?" is a sentence, The D is a capital, yeah its big! But "Do you like bugs? is also question, So therefore it ends with a Question Mark! So, "There is a monster!" is a sentence, The T is a capital, yeah its big! But "There is a monster!" has a strong feeling, Therefore it ends with an Exclamation Mark! A sentence begins with a Capital Letter, A Capital Letter is a letter that's big, A Capital Letter is NOT a small letter, A Capital Letter is big big BIG! A sentence ends with a Period, Or an Exclamation or a Question Mark, A sentence always ends with a Period, Or an Exclamation or a Question Mark