Dear Writeacher, thank you for the answer.

Will you help me with two more questions?
1) Do you think it's possible to say "according to the opinion of many analysts" (I mean 'according' + 'opinion', or just "according to many experts")?
2) Do you think it's correct to say: "the country exercises its foreign policy by financial aid" (is 'by' OK or is it "by providing aid")?
Thank you for help.

In each sentence, the second phrasing is far better, yes!

Of course, I'd be happy to help you with your questions!

1) Yes, it is possible to say "according to the opinion of many analysts." The word "according" is often used to introduce a source or reference for a particular statement or claim. In this case, you are attributing the opinion to a group of analysts. It's important to note that when using this phrase, you should follow it up with the actual opinion or view expressed by the analysts. For example, you could say, "According to the opinion of many analysts, the economy is expected to rebound next year."

2) While it can be grammatically correct to say "the country exercises its foreign policy by financial aid," it may not be as clear or specific as saying "by providing aid." The word "by" often indicates the means or method by which something is done. So, if the country's foreign policy goal is achieved through the act of providing financial aid, it would be clearer to state "by providing aid." However, it's important to consider the context and if there are any other means through which the country exercises its foreign policy.