1. 1. The verb to be is used as the main verbtense to state that something or someoneexists.AFFIRMATIVE SENTENCES NEGATIVE SENTENCESQUESTIONS AND SHORT/LONGANSWERS
2. 2. AFFIRMATIVE SENTENCESSUBJECT VERB TO-BE COMPLEMENThttp://www.eclecticenglish.com/grammar/PresentSimpleToBe1A.html
3. 3. NEGATIVE SENTENCES SUBJECT VERB TO-BE NOTCOMPLEMENT I AM NOTPAULHE, SHE ISNOTA STUDENT IT ISNOTA CATWE, YOU, THEYARENOTIN THE HOSPITALhttp://www.mansioningles.com/gram37.htm
4. 4. SHORT/LONG ANSWERSIS HE, SHE A STUDENT?YES, HE/SHEYES, HE/SHE IS A STUDENT?NO, HE/SHE IS NOTNO, HE/SHE IS NOT A STUDENTARE THEY IN THE HOSPITAL?YES, THEY AREYES, THEY ARE IN THE HOSPITALNO, THEY AREN NOTNO, THEY ARE NOT IN THE HOSPITAL http://www.englisch-hilfen.de/en/grammar/frage1.htm
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