Patterns using this form:
-masu [polite]
→ Jump Start 1 - Lesson 1
-masen [negative, polite]
→ Jump Start 1 - Lesson 2
-mashita [past, polite]
→ Jump Start 1 - Lesson 3
-masendeshita [past negative, polite]
→ Jump Start 1 - Lesson 4
-mashou [let’s, polite]
→ Jump Start 2 - Lesson 35
-ni + iku [go to do]
→ Jump Start 1 - Lesson 19
-tai [want to do]
→ Jump Start 1 - Lesson 49