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[wptabs type="accordion"]

[wptabcontent]104. Using the past tense after did instead of the  infinitive without to.[/wptabcontent]
[wptabcontent] (a) To ask questions:
Don't say:  Did you went to  school yesterday?
Say: Did you go to school yesterday?

(b) To make negatives:
Don't say: I  did not went to school  yesterday.
Say: I did not go to school yesterday.

Use the present infinitive without to, not the past tense after the auxiliary did.

Note: the answer to a question beginning with did is always in the past tense:
Did you see the picture? -Yes, I saw the picture; or Yes, I did.

[/wptabcontent]

[wptabcontent]105.  Using the third person singular after does instead of the  infinitive without to.[/wptabcontent]
[wptabcontent] (a) To ask questions:
Don't say: Does  the gardener waters  the flowers?
Say: Does the gardener water the flowers?
(b) To make negatives:
Don't say: The man doesn't waters the  flowers.
Say: The man doesn't water the flowers.
After the auxiliary does use the infinitive without
 to, and not the third person of the present.
Note: The answer to a question beginning with Does is always 
in the present tense, third person: Does he like the
 cinema? - Yes, he likes the cinema; or Yes, he does. [/wptabcontent]

[wptabcontent]106. Using the third person singular after can, must, etc., instead 6f the  infinitive without to.[/wptabcontent]
[wptabcontent] Don't say: Ian can speaks English very well.
Say: Ian can speak English very well.
After the verbs can, must, may, shall, and will , use the infinitive
 without to , and not the third person of the present. [/wptabcontent]

[wptabcontent]107. Wrong sequence of tenses.[/wptabcontent]
[wptabcontent] Don't say: Rachel asked me what I am doing.
Say: Rachel asked me what I was doing.
When the verb in the main clause is in the past tense, use
 a past tense in subordinate clauses.
Note: This rule doesn't apply (1) to verbs within quotations,
 (2) to facts that are true at all times. We say:
1 She said, 'I am waiting for your answer'
2 He said that London is a great city. [/wptabcontent]

[wptabcontent]108. Using will/'ll instead of would/'d in  a subordinate clause.[/wptabcontent]
[wptabcontent] Don't say: He said (that) he will/Ml come tomorrow.
Say: He said (that) he  would/'d come tomorrow.

Will/'ll changes to would/'d in subordinate causes, when the verb
 in the main clause is in a past tense.
 [/wptabcontent]

[wptabcontent]109. Using may instead of might in a subordinate clause.[/wptabcontent]
[wptabcontent] Don't say:  Last  Sunday Alisa told me that she may come.
Say: Last  Sunday Alisa told me that she might come.

May changes to might in subordinate clauses, when the verb
 in the main clause is in the past simple tense.

Note: The conjunction that is never preceded by a comma. [/wptabcontent]

[wptabcontent]110.  Using can instead of could in a subordinate clause.[/wptabcontent]
[wptabcontent] Don't say: Ben thought he can win the prize.
Say: Ben thought he could win the prize.

Can changes to could in subordinate clauses, when the verb
 in the main clause is in the past simple tense. [/wptabcontent]

[wptabcontent]111. Using the past simple tense after to + the infinitive.[/wptabcontent]
[wptabcontent] Don't say: He tried to kicked the ball away.
Say: He tried to kick the ball away.

Don't use the simple past tense after to. [/wptabcontent]

[wptabcontent]112.  Using the past simple tense after an auxiliary verb, instead of the past participle.[/wptabcontent]
[wptabcontent] Don't say:  I've forgot to bring my book.
Say:  I've forgotten to bring my book. [/wptabcontent]

[wptabcontent]Use the past participle (and not the past tense) with the auxiliary verb have an its parts.
113.  Using must or ought to to express a past obligation.[/wptabcontent]
[wptabcontent] Don't say: You ought to come yesterday.
Say: You ought to have come yesterday.
Or: You should have come yesterday.
Don't use must and ought to as past tenses. To express a past duty
 (which wasn't done) use the perfect infinitive without to after ought
 to or should, or expressions such as had to, was obliged to.
Note: In indirect speech use must and ought to as past
 tenses: He said he must do it.
 [/wptabcontent]

[wptabcontent]114.  Using the present perfect instead of the simple past tense.[/wptabcontent]
[wptabcontent] Don't say: I have seen a good film yesterday.
Say: I saw a good film yesterday.
Use the simple past tense (and not the present perfect) for
 an action complete in the past at a stated time.
Note: When a sentence has a word or a phrase denoting past time, like
yesterday, last night, last week, last year,
 then, ago, etc., always use a simple past tense.
 [/wptabcontent]

[wptabcontent]115.  Using the simple past tense instead of the present perfect.[/wptabcontent]
[wptabcontent] Don't say: I saw the Parthenon of Athens.
Say: I have seen the Parthenon of Athens.
If we are speaking of the result of a past action rather
 than of the action we must use the present perfect tense.
 When somebody says, I have seen Panthenon, he or she is not
 thinking so much of the past act of seeing it, as the
 present result of that past action. [/wptabcontent]

[wptabcontent]116. Using the simple past tense with a recent action, instead  of the  present  perfect.[/wptabcontent]
[wptabcontent] instead  of the  present  perfect.
Don't say: The  clock struck.
Say: The clock has struck.
If we are speaking of an action just finished, we must use
 the present perfect instead of the simple past tense. For example
, immediately after the clock strikes, we shouldn't say
 The clock struck, but The dock has struck.
 [/wptabcontent]
[wptabcontent]117. Using the simple present instead of the present perfect.[/wptabcontent]
[wptabcontent] Don't say: I'm at this school two years.
Say: I've been at this school two years.

Use the present perfect (and not the simple present) for an action
 begun in the past and continuing into the present.
 I've been at this school two years means I'm still here. [/wptabcontent]
[wptabcontent]118. Using the simple present instead of the present perfect after a since clause of time.[/wptabcontent]
[wptabcontent] Don't say:  Since he came, we're happy.
Say: Since he came, we've been happy.

The verb after a since clause of time is
 generally in the present perfect tense. [/wptabcontent]
[wptabcontent]119. Using the simple present instead of the present continuous.[/wptabcontent]
[wptabcontent] Don't say: Look! Two boys fight.
Say: Look! Two boys are fighting.

Note: We also use the present continuous for the future when
 something is pre-arranged or expected with some certainty:
 Lorna is arriving tomorrow at six. Tom and I are eating out tonight.
 [/wptabcontent]
[wptabcontent]120. The continuous form of the tense misused.[/wptabcontent]
[wptabcontent] Don't say:  I'm  understanding the lesson now.
 Say: I understand the lesson now.

As a rule, verbs denoting a state rather than an act have
 no continuous forms, like understand, know, believe, like,
 love, belong, prefer, consist, mean, hear, see, etc.
 [/wptabcontent]
[wptabcontent]121. Using the present continuous for a habitual  action, instead of the simple present.[/wptabcontent]
[wptabcontent] Don't say: Every morning I'm  going for  a walk.
Say: Every morning I go for a walk.
Use the simple present (and not the present continuous)
 to express a present habitual action.

Note. Use the present continuous to express a habitual action
 with the word always or with a verb denoting a continuous
 state: He is always talking in class; He is living in London. [/wptabcontent]
[wptabcontent]122. Using the verb  to use for the present habitual action.[/wptabcontent]
[wptabcontent] Don't say: I use to get up at six every morning.
Say: I get up at six every morning.
Or: I'm accustomed to getting up at six, etc.
The verb to use doesn't express a habit in the present.
 / use means / employ: I use a pen to write with.
Note: Used to expresses a past state or habit and it usually
 refers to some old situation which no longer exists: I used
 to see him every day; My father used to play football very well. [/wptabcontent]
[wptabcontent]123. Using the past continuous for a habitual action, instead of the simple past tense.[/wptabcontent]
[wptabcontent] Don't say: Last year I was walking to school every day.
Say: Last year I walked to school every day.
Use the simple past tense to express a habit in the
 past, and not the past continuous
Note: Use the past continuous tense to describe events in
 the past happening at the time another action took place:
 I was walking to school when I met him. [/wptabcontent]
[wptabcontent]124. Using the past tense instead of the past perfect.[/wptabcontent]
[wptabcontent] Don't say: The train already  left before I  arrived.
Say: The train had already left before I arrived.
Use the past perfect when the time of one past action is more
 past than that of another. Put the action which was completed
 first in the past perfect and the second action in the past tense.
Note: Don't use the present tense and the past perfect in the same
 sentence. It would be incorrect to say: My brother says that
 he had not gone to the cinema last night.
 [/wptabcontent]
[wptabcontent]125. Using the past perfect instead of the simple past tense.[/wptabcontent]
[wptabcontent] Don't say:  I'd  finished the  book  yesterday
Say: I finished the  book yesterday.

Don't use the past perfect unless there is another
 verb in the past tense in the same sentence. [/wptabcontent]
[wptabcontent]126. Using the future in a clause of time, instead of the present  tense.[/wptabcontent]
[wptabcontent] Don't say: I'll see you when I  shall come back.
Say: I'll see you when I come back.

If the verb in the main clause is in the future, the verb
 in the time clause must be in the present tense.
 [/wptabcontent]
[wptabcontent]127. Using the future in the if clause instead of the present tense.[/wptabcontent]
[wptabcontent] Don't say: If he'll ask me, I will/'ll stay.
Say: If he asks me, I will/'ll stay.

Use the present tense in a future conditional in the if clause
 and the future tense in the main clause

Note: But the future tense may be used in an if clause expressing a request:
If you will/'ll give me some money I will/'ll buy you a drink.
 [/wptabcontent]

[/wptabs]