1. Water
Instructor: Tahani Al-Hammami

2. Key Words: Figures
• Large numbers: one million • Fractions: a half (⅟2), a third
(1,000,000); three billion (⅓), a quarter (⅟4), a fifth (⅕),
(3,000,000,000); three a tenth (⅟10), two thirds (⅔).
hundred thousand
• Estimates: about a million,
(300,000); six hundred and
nearly 70%, over a third,
fifty-three (653).
between 30 and 40.
• Decimals: 1.7 (one point
• Comparison: twice, three
seven); 6.2 (six point two).
times as many / as much

3. Grammar: Speculating
• Modal auxiliary verbs that express degrees of
certainty.

4. Two Types of Speculating
1. Speculating about the present:
Modal verb + be
e.g. It couldn’t be more difficult.
2. Speculating about the past:
Modal verb + have + 3rd form of the verb
e.g. They may have done other work.