Dave's ESL Cafe's Student Discussion Forums

[dido4]

1.The concert will star at six thirty, but we'll arrive before noon.

2.We will arrive before noon before the concert starts at six thirty.

Q1: Are these two sentences right?

Q2:Do they have the same meaning?

Q3:Don't know how to distinguish general sentences (a.) and if clause(or before / after / when / because clauses,b). For example:
a.
-->I drink milk before I go to bed.
-->She met Dan when she was walking in the park.
b.
-->If it rains, I won't go to school.
-->I will go to the movie, before the movie starts.
(The tense is different. How to tell or write the sentences with right tense and clause. Because I am confused with those (tense). )