1. CAN<br />How is the verb tense quot;
canquot;
used?<br />The verb tense quot;
canquot;
is used as both an auxiliary verb and a modal verb? Can is almost always used with a main verb. <br />Can is used to:Can't is used to state:to request somethingto state the something is not allowedto request a favor from someoneto request something not be doneto ask for helpto state the inability of something or someoneto state the possibility of an event/activityto deny permissionto state the ability of someone/something to request permission from someone or for something to ask for permission from someone or for something <br />Examples of the verb tense quot;
canquot;
:<br />The cat can go to the store.<br />Can I go to school late on Tuesday?<br />You can't go to school late on Tuesday?<br />We can't help you clean the house.<br />The structure of the verb tense quot;
canquot;
:<br />When using as a verb or an auxiliary verb the verb tense quot;
canquot;
stays in its base form.<br />Can doesn't change form according to the subject.<br />Can is followed by a main verb tense. The main verb tense also stays in its base form. (The main verb tense that is used with can doesn't change form according to the subject.)<br />-Subjectquot;
Canquot;
quot;
HYPERLINK quot;
http://www.english-the-easy-way.com/English_ESL/Main_Verbs.htmquot;
Main Verbquot;
-Positive SentencesI -All subjects*can goto the storeNegative SentencesWe - All subjects*can not go to the storeQuestions**Canthey -goto the store<br />* All subjects is I, we, they, you, plural nouns, singular nouns and uncountable nouns.<br />**Questions - Questions using the verb tense quot;
canquot;
the verb tense quot;
can comes before the subject.<br />COULD<br />The Structure of the Verb Tense quot;
couldquot;
.<br />When using as a verb or an auxiliary verb tense the verb quot;
couldquot;
stays in its base form.<br />Could doesn't change form according to the subject.<br />Could is followed by a main verb. The main verb tense also stays in its base form. The main verb tense doesn't change form according to the subject.<br />--Subjectthe verb quot;
couldquot;
-quot;
HYPERLINK quot;
http://www.english-the-easy-way.com/English_ESL/Main_Verbs.htmquot;
Main Verb Tensequot;
-Positive SentencesI could -goto the storeNegative SentencesWe could not go to the storeQuestions**Couldthey -goto the store<br />* The subjects are I, we, they, you, plural nouns singular nouns and uncountable nouns.<br />**Questions - When could is used to ask a question quot;
couldquot;
comes before the subject.<br />How is the verb tense quot;
couldquot;
used?<br />The English verb quot;
couldquot;
is used as both an auxiliary verb and a modal verb? Could is almost always used with a main verb tenes. <br />Could is used as the past tense of quot;
canquot;
.<br />Could is used to is used to request something in the present tense.<br />Usually when could is used in the present tense, it is used to ask a question.<br />Examples:<br />Could the girls come with me to the store?<br />I could not go to the moves last night, I had to study.<br />We couldn't help you clean the house.<br />Structure of quot;
couldquot;
:<br />When using as a model verb or an auxiliary verb the verb quot;
couldquot;
stays in its base form.<br />Could doesn't change form according to the subject.<br />Could is followed by a main verb. The main verb also stays in its base form. (The main verb that is used with could doesn't change form according to the subject.)<br />-Subjectquot;
couldquot;
-quot;
HYPERLINK quot;
http://www.english-the-easy-way.com/English_ESL/Main_Verbs.htmquot;
Main Verbquot;
-Positive SentencesI could -goto the storeNegative SentencesWe could not go to the storeQuestions**Couldthey -goto the store<br />* All subjects are: I, we, they, you, plural nouns, singular nouns and uncountable nouns.<br />**Questions - When could is used to ask a question, could comes before the subject<br /> <br />