英語2個動詞問題

Every English sentence only has one verb in it, unless it is in a complex structure, such as:

Although I am very tired, I need to stay awake to complete my work and hand it in on time tomorrow morning.

In this sentence, you can see the comma ',' as the as the scissors that cut the whole sentence (i.e. the first word with a capital first letter to the fullstop '.') into two 'sentences'/parts -- the first part is 'although I am very tired' and the second part is the left over bit.

The first part is a single 'sentence', so 'am' is the verb. Simple.
The second part is another 'sentence' on its own. Usually the first verb appears in the sentence is the only verb in the sentence, so no matter how many other 'verbs' appear afterwards in the same sentence, they are only vocabularies. The only exceptions are, when 'and', 'or', or other linking conjunctions appear in between the two verbs. This is an easy way of remembering the rules at the beginning. Therefore in my example, the verb in the second part of the whole sentence is 'need'.

In your case, I tried hard to adapt the information system

'tried' is obviously the verb in past tense. 'Adapt' is not a verb in this sentence. The reason behind it is because any verbs (no matter how much they seem to be the 'true verb' to you; they are not) following a preposition is not really the motion of the subject in the sentence. I tried hard to adapt it, but I didn't adapt it. What you did was 'tried', but not straighly 'adapted'. If the sentence changes to I adapted the information to make it function better, 'adapted' will be the verb. Your motion is to adapt, 'to make it function better' is just the purpose.

I am not trained to explain the grammar in English but I hope you get a better concept of the grammar through my very long answer. I hope it didn't confuse as I aimed to make things clearer for you. Ask if you aren't sure.

呢個係,即係-to -ing gerund

TRY 係動詞, but ADAPT 唔係, because ADAPT 前有 to .