diff --git a/book-12-lesson-1.module b/book-12-lesson-1.module
index d8419671..0f236855 100644
--- a/book-12-lesson-1.module
+++ b/book-12-lesson-1.module
@@ -279,38 +279,54 @@ $GRAMMAR Conditional Sentences
 ID: l1-s11
 INTRO: Here's how those "if" sentences work. The "if" clause uses the present tense, the main clause uses the present or future — and either clause can come first.
 
-Conditional sentences have two parts: the if-clause and the main clause. One type of conditional sentence is used to show what may/will happen in the present/future if a certain condition happens.
+CARD: Conditional sentences have two parts: the **if-clause** and the **main clause**. Either one can come first.
+{If the weather's good, we'll drive to the beach.}
+{We'll drive to the beach if the weather's good.}
 
-When the if-clause has the present tense, the main clause uses the present or future tense. Note that the if-clause may come before or after the main clause.
+CARD: When the if-clause has the **present tense**, the main clause uses the **present or future**:
+{If the weather's good, we drive to the beach.}
+{If the weather's good, we're driving to the beach.}
+{If the weather's good, we'll drive to the beach.}
+{If the weather's good, we're going to drive to the beach.}
 
+CARD: The main clause can also carry a **modal**:
+{Tom can come if he doesn't have to study.}
+{Tom might come if he doesn't have to study.}
+{Tom should come if he doesn't have to study.}
+{Tom must come if he doesn't have to study.}
+{Tom is able to come if he doesn't have to study.}
+
+CARD: Questions work the same way — question the **main clause**:
+{Could you read my paper if you have time?}
+{Will you read my paper if you have time?}
+{Are you going to read my paper if you have time?}
+
+CARD: …and the question can follow the if-clause:
+{If you finish early, how will you tell me?}
+{If you finish early, what will you do?}
+{If you finish early, where are you going?}
+
+CARD: Three to remember:
+{If you speed, you will get a ticket.}
+{Mike must go if he has a reservation.}
+{If the telephone rings, can you answer it?}
+
+SUMMARY:
 | If Clause | Main Clause |
 |---|---|
-| If the weather's good, | we {drive} to the beach.<br>we{'re driving} to the beach.<br>we{'ll drive} to the beach.<br>we{'re going to drive} to the beach. |
+| If the weather's good, | we drive to the beach.<br>we're driving to the beach.<br>we'll drive to the beach.<br>we're going to drive to the beach. |
 
 | Main Clause | If Clause |
 |---|---|
-| Tom {can} come | if he doesn't have to study. |
-| Tom {might} come | if he doesn't have to study. |
-| Tom {should} come | if he doesn't have to study. |
-| Tom {must} come | if he doesn't have to study. |
-| Tom {is able to} come | if he doesn't have to study. |
+| Tom can / might / should / must / is able to come | if he doesn't have to study. |
 
 | Main Clause (Questions) | If Clause |
 |---|---|
-| {Could you read} my paper | if you have time? |
-| {Will you read} my paper | if you have time? |
-| {Are you going to read} my paper | if you have time? |
+| Could you / Will you / Are you going to read my paper | if you have time? |
 
 | If Clause | Main Clause (Questions) |
 |---|---|
-| If you finish early, | {how will you tell} me? |
-| If you finish early, | {what will you do?} |
-| If you finish early, | {where are you going?} |
-
-**Examples:**
-1. If you speed, {you will get} a ticket.
-2. Mike {must go} if he has a reservation.
-3. If the telephone rings, {can you answer} it?
+| If you finish early, | how will you tell me?<br>what will you do?<br>where are you going? |
 
 # Source: ST §If We Go to the Beach, We'll Have a Good Time
 $DIALOGUE If We Go to the Beach, We'll Have a Good Time {st-page_021_001.jpg|Two young men talking inside a room while looking out towards a beach scene}