Выражение a lot of считается разговорным и снижает уровень формальности. В IELTS оно тянет лексику вниз, а в TOEFL звучит неакадемично. Поэтому его нужно заменять более точными и формальными вариантами.
Подходят для любой темы.
many (для исчисляемых)
Many students face this problem.
much (для неисчисляемых в отрицаниях и вопросах)
Not much evidence supports this claim.
numerous
Numerous studies indicate the same trend.
a great number of
A great number of participants agreed with the statement.
a wide range of
A wide range of factors influences this process.
a considerable amount of (неисчисляемые)
A considerable amount of research supports this idea.
a considerable number of (исчисляемые)
A considerable number of young people prefer online learning.
a substantial amount/number of
A substantial amount of funding is required.
a significant amount/number of
A significant number of citizens oppose this policy.
a large proportion of
A large proportion of consumers shop online.
a high percentage of
A high percentage of graduates struggle with debt.
the majority of
The majority of respondents agreed.
an overwhelming amount/number of
An overwhelming number of experts support this view.
a growing body of evidence
(одна из самых “академичных” фраз)
A growing body of evidence suggests that climate change is accelerating.
a considerable body of research
A considerable body of research highlights this problem.
multiple
Multiple factors contribute to the issue.
various / numerous
Various solutions have been proposed.
a variety of
A variety of methods can be applied.
a large segment of the population
a considerable share of young people
a significant portion of resources
extensive research
widespread use
A lot of people think social media is harmful.
Many people believe social media is harmful.
A significant number of individuals consider social media harmful.
A large proportion of the population views social media as harmful.
A growing body of evidence shows that social media has negative effects.
A lot of research shows this method works.
Extensive research demonstrates that this method is effective.
A substantial amount of research supports this method.
A growing body of research confirms its effectiveness.