早知如此，就不应该借钱给他。

You should have known better than to lend him money.

Source: Tatoeba

Sentence Composition

1 早知 zǎozhī to know in advance
2 如此 rúcǐ like this; so; such
3 就 jiù
  1. (after a suppositional clause) in that case; then
  2. (after a clause of action) as soon as; immediately after
  3. (same as 就是 jiùshì) merely; nothing else but; simply; just; precisely; exactly
  4. only; as little as
  5. as much as; as many as
  6. to approach; to move towards
  7. to undertake; to engage in
  8. (often followed by 着 zhe) taking advantage of
  9. (of food) to go with
  10. with regard to; concerning
  11. (pattern: 就 jiù ... 也 yě ...) even if ... still ...
  12. (pattern: 不 bù ... 就 jiù ...) if not ... then must be ...
4 不 bù
  1. no; not so
  2. (bound form) not; un-
5 应该 yīnggāi ought to; should; must
6 借钱 jièqián to borrow money; to lend money
=7 给 gěi
  1. to
  2. for
  3. for the benefit of
  4. to give
  5. to allow
  6. to do sth (for sb)
  7. (grammatical equivalent of 被)
  8. (grammatical equivalent of 把)
  9. (sentence intensifier)
=7 给 jǐ
  1. to supply
  2. to provide
8 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)