Geography of Rwanda
Senior 4 · English
Geography of Rwanda
Lesson 3 of 5
25 min
Let's begin
Open any atlas, encyclopedia or geography textbook and count the verbs. Almost all of them are in two forms: the present simple (Rwanda lies in East Africa) and the present passive (It is bordered by four countries). These two forms are the grammar of facts. In this lesson you learn exactly when each one is used, how to build it without mistakes, and how to decide whether a sentence needs a passive at all.
An entry for a school fact file, written by Ganzaa from the facts in Lessons 1 and 2. The verbs are in bold.
Rwanda lies in East Africa, a little south of the Equator. It is bordered by Uganda, Tanzania, Burundi and the Democratic Republic of the Congo, and it has no coastline. The country is divided into four provinces and the City of Kigali, which are in turn divided into thirty districts. Most of the land is drained by the Nyabarongo and the Akagera, which flow east towards Lake Victoria. In the west, Lake Kivu is shared with the Democratic Republic of the Congo; methane gas is extracted from its deep water and is burned to generate electricity. The Virunga volcanoes rise in the north-west, and their upper slopes are protected as a national park. The central plateau consists of rounded hills, and many slopes are cut into terraces. Rain usually falls in two seasons. Plastic carry bags are not sold in shops, because they are banned by law.
Notice: sort the bold verbs into two lists. In the first, the subject does something or is something (lies, has, flow). In the second, something is done to the subject (is bordered, is extracted). The first list is the present simple active; the second is the present passive.
| Use | Example |
|---|---|
| Permanent facts and states | Rwanda lies in East Africa. It has no coastline. |
| General truths and things that happen regularly | Rivers flow downhill. Rain usually falls in two seasons. |
| Describing what something is made of or contains | The central plateau consists of rounded hills. The park contains five volcanoes. |
| Timetables (illustrative) | The bus to Musanze leaves at 7.30 every morning. |
| Subject | Affirmative | Negative | Question |
|---|---|---|---|
| I, you, we, they, plural nouns | The rivers flow east. | They do not (don't) flow west. | Do they flow east? |
| he, she, it, singular nouns | The river flows east. | It does not (doesn't) flow west. | Does it flow east? |
Spelling of the third person -s: most verbs add -s (lies, rises, borders); verbs ending in -s, -sh, -ch, -x or -o add -es (crosses, reaches, goes); a consonant + y becomes -ies (carry → carries, dry → dries), but a vowel + y just adds -s (stay → stays); have becomes has.
State verbs. Verbs that describe a permanent position or make-up, such as lie, border, belong to, consist of, contain, depend on, include, are not normally used in the continuous. The Akagera flows into Lake Victoria (always true). Use the present continuous only for something temporary: The river is flooding the valley this week.
Form: am / is / are + past participle. The verb be agrees with the new subject.
| Singular subject | Plural subject | |
|---|---|---|
| Affirmative | The lake is shared with the DRC. | The slopes are protected as a park. |
| Negative | Coal is not mined here. | Plastic bags are not sold in shops. |
| Question | Is methane extracted from the lake? | Are the districts divided into sectors? |
Past participles to know for describing places: grow → grown, know → known, find → found, build → built, make → made, sell → sold, hold → held, speak → spoken, cut → cut, burn → burned (or burnt).
When to use the passive
Add by + the doer (the agent) only when it gives useful information: The border is marked by the Akagera River (useful); Tea is grown by people (useless: who else would grow it?).
Phrases that geography writing uses again and again: is located in, is situated in, is bordered by, is divided into, is drained by, is surrounded by, is known as, is covered with, is shared with, is made up of.
Worked example 1: active to passive, and deciding on the agent
Make each sentence passive. Keep the agent only if it adds information.
Worked example 2: active or passive?
Complete with the present simple, active or passive: Lake Kivu ___ (lie) on the western border. It ___ (share) with the DRC. Methane ___ (extract) from its deep water. The Rusizi River ___ (carry) its water south.
Answer: Lake Kivu lies on the western border. It is shared with the DRC. Methane is extracted from its deep water. The Rusizi River carries its water south.
Warning
Tip
The "by zombies" test. If you can add "by zombies" after the verb and the sentence still makes grammatical sense, it is passive: Tea is grown on the hills (by zombies) works, so it is passive; Rwanda has no coastline (by zombies) makes no sense, so it is active. It sounds silly, which is why you will remember it.

How to Use the Passive Voice in English, Oxford Online English (about 14 minutes, 2019). Watch the first half, on how the passive is formed and when it is used. Pause after each section and write one sentence about Rwanda that follows the same rule.
Practice
Key points
Sources and credits
Quick check
Choose the correct sentence.