Verb of the Sentence

Machines existed in Leonardo's day.

• existed in

• Leonardo's

• day

• existed

Tags

CCSS.L.3.1D

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1C

CCSS.L.5.1D

For example, waterwheels turned millstones.

• turned

• turned millstones

• millstones

• waterwheels

Tags

CCSS.L.3.1A

As a boy, Leonardo had watched machines closely.

• closely

• had watched

• had

• watched

Tags

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

By adulthood, he had analysed how each part worked.

• had

• analysed

• had analysed

• he had

Tags

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

Unlike others, Leonardo combined parts in new ways.

• combined parts

• combined

• new ways

• others

Tags

CCSS.L.3.1D

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1C

CCSS.L.5.1D

He thought, "Aha! This change improves the machine!"

• improves

• machine

• change improves

• improves the machine

Tags

CCSS.L.3.2C

CCSS.L.4.2B

CCSS.L.6.3A

He reasoned, "This invention is working better with different parts."

• invention

• better

• working better

• is working

Tags

CCSS.L.2.1E

CCSS.L.3.1A

CCSS.L.3.1G

He explained his analyses in journals.

• analyses

• journals

• explained

• explained his

Tags

CCSS.L.2.1B

CCSS.L.3.1B

CCSS.L.K.1C

Grateful engineers still study his sketches.

• still study

• his sketches

• study

• still

Tags

CCSS.L.2.1E

CCSS.L.3.1A

CCSS.L.3.1G

These illustrations are serving as blueprints for us.

• are serving

• are

• serving

• blueprints

Tags

CCSS.L.3.1E

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1C

CCSS.L.5.1D