Verbs followed by that clause

1. With "that"
We can use clauses with that:
• after verbs of thinking:
think
believe
expect
decide
hope
know
understand
suppose
guess
imagine
feel
remember
forget
suspect (v-nghi ngờ) or doubt (không tin)
_ I hope that you will enjoy your holiday.
_ She didn’t really think that it would happen.
_ I knew that I had seen her somewhere before.

• after verbs of saying:
say
admit
argue
reply
agree
claim
deny
mention
answer
complain
explain
promise
suggest
_ They admitted that they had made a mistake.
_ She argued that they should invest more in the business.
_ The children complained that they had nothing to do.

Note: tell and some other verbs of saying must always have a direct object (see clauses, sentences and phrases):
tell
convince
persuade
inform
remind
_ We tried to tell them that they should stop what they were doing.
_ The police informed everybody that the danger was over.

• as postmodifiers after nouns to do with thinking or saying:
advice
belief
claim
feeling
argument
hope
promise
report
guess
opinion
idea
_ He made a promise that he would do all he could to help.
_ I had a funny feeling that something was wrong.

• after some nouns to say more about the noun:
fact
advantage
effect
possibility
chance
danger
evidence
problem
difficulty
_ She pointed out the danger that they might be left behind.
_ There was a chance that we would succeed
    Note: We often use a that clause to define one of these nouns after the verb be :
danger
problem
chance
possibility
fact
_ The danger is that we will be left behind.
_ The fact is that it is getting very late.

• after some adjectives which describe feelings to give a reason for our feelings:
pleased
sorry
happy
unhappy
sad
excited
glad
disappointed
afraid
_ I am sorry that you can’t come.
_ Everybody was pleased that the danger was past.
_ It is lucky that you were able to drive us home.

2. No "that"
NOTE: We can always use a clause without the word that:
_ They admitted [that] they had made a mistake.
_ The police informed everybody [that] the danger was over.
_ I am sorry [that] you can’t come.
_ There was chance [that] we would succeed.