這句看似簡單，但實際很難

Make 有許多的意思 . 在這裡 make (verb) = 到達; 趕上
It (pronoun) = 它 ~ used as an object of "make" when the real object is a phrase or a clause.

Make it 兩個字一起, 有特別的意思
make it =
(1) to manage to arrive 到達, 及時趕到
If we run, we should make it.
(2) to be successful in a particular activity 成功
Nowadays many women have made it to the top in the business world.
(3) to not die as a result of an illness or accident (病痛等)好轉
The attending surgeon thinks that the patient is going to make it.

there (adverb) = a particular place that is not where you are (opposite: here) 那處

on time = at the correct time , not late 按時, 及時

整句的恴思

I cannot make it there on time. = 我不能及時趕到那處


2012-11-18 04:01:51 補充：
Correction:
there (adverb) = AT a particular place that is not where you are.

make it 是一個phrasal verb
這裡應該是 arrive 的意思

拆開來的話…我還真的不會解…
像 look after / make up / give up 這些phrasal verb, 拆開來就差很多了…

there
在這裡是 到某個地方(to a certain place) 的意思。
詞性的話是adverb。

所以整句的意思是:
我不能準時到達那裡 。