怀疑 + Clause/Noun
The verb 怀疑 (huáiyí) means "to doubt" or "to suspect" and is used to express uncertainty or suspicion about something. It can be followed by a noun or a clause and conveys a range from mild skepticism to serious suspicion.
我怀疑他说的话不是真的。
wǒ huáiyí tā shuō de huà bù shì zhēn de.
I suspect what he said is not true.
警方怀疑这起火灾是有人故意纵火。
jǐngfāng huáiyí zhè qǐ huǒzāi shì yǒurén gùyì zònghuǒ.
The police suspect that the fire was deliberately set by someone.
你不用怀疑,这个消息绝对可靠。
nǐ bùyòng huáiyí, zhège xiāoxi juéduì kěkào.
You don't need to doubt it—this information is absolutely reliable.
我怀疑他说的话不是真的。
Wǒ huáiyí tā shuō de huà bù shì zhēn de.
I suspect what he said is not true.
警方怀疑这起火灾是有人故意纵火。
Jǐngfāng huáiyí zhè qǐ huǒzāi shì yǒu rén gùyì zònghuǒ.
The police suspect this fire was deliberately set by someone.
你不用怀疑,这个消息绝对可靠。
Nǐ bùyòng huáiyí, zhège xiāoxī juéduì kěkào.
You don't need to doubt it—this information is absolutely reliable.