Prepositions and connectors · 介词与连接词
Small words that link
- Prepositions show time and place: at, in, on, to.
- Connectors join ideas: and, but, so, because.
- They are small words, but they hold sentences together.
I study at six, on Monday, in April; the calendar is impressed.
把句子连起来的小词
- 介词 (prepositions) 表示时间和地点:at、in、on、to。
- 连接词 (connectors) 连接想法:and、but、so、because。
- 它们都是小词,却把句子串在一起。
我在四月的星期一六点学习；日历很佩服。
Prepositions of time: at / in / on
- at + a clock time / point: at 7 o'clock, at night.
- on + a day / date: on Monday, on May 1st.
- in + a longer period: in the morning, in July, in 2020.
- Small → large: at → on → in.
时间介词:at / in / on
- at + 具体钟点 / 节点:在at 九点 /nine(九点)、at night。
- on + 某天 / 日期:on Monday、on May 1st。
- in + 较长时间段:in the morning、in July、in 2020。
- 由小到大:at → on → in。
at, in or on? (time) · at、in 还是 on?(时间)
at a clock time, on a day/date, in a month/year/longer period. · at 接钟点,on 接某天/日期,in 接月/年/较长时段。
Choose the correct preposition: The class starts ___ 9 o'clock. · 选出正确的介词:The class starts ___ 9 o'clock。
A clock time uses “at”: at 9 o'clock. · 具体钟点用 at:at 9 o'clock。
Prepositions of place: at / in / on
- at + a point / place: at the bus stop, at home.
- in + an enclosed space: in the room, in China.
- on + a surface: on the table, on the wall.
地点介词:at / in / on
- at + 某一点 / 场所:at the bus stop、at home。
- in + 内部空间:在in 中国 /China(在中国)、in the room。
- on + 表面:在on （冠词）the 桌子上 /table(在桌子上)、on the wall。
Complete: The book is ___ the table. (surface) · 填空:The book is ___ the table。(表面)
A surface uses “on”: on the table. · 表面用 on:on the table。
Connectors: and, but, so, because
- and = adds; but = contrast; or = a choice.
- so = result: I was tired, so I went to bed.
- because = reason: She stayed home because it was raining.
- so gives the result; because gives the reason.
连接词:and、but、so、because
- and = 相加;but = 转折;or = 选择。
- so = 结果:我I （过去）was 累tired 所以, so 我I 去went （介词）to 睡觉bed.(我累了,所以去睡了。)
- because = 原因:She stayed home because it was raining.
- so 引出结果;because 引出原因。
Choose the connector: She stayed home ___ it was raining. · 选出连接词:She stayed home ___ it was raining。
“it was raining” is the reason → use “because”. (so introduces a result.) · it was raining 是原因 → 用 because。(so 引出结果。)
Translate into English: 我累了,所以去睡觉了。 · 翻译成英语:我累了,所以去睡觉了。
Result → so: “I was tired, so I went to bed.” · 结果 → so:I was tired, so I went to bed。
Common mistakes
- ❌ Because it was raining, so we stayed home. → keep only one: because or so.
- ❌ in Monday → ✓ on Monday; ❌ at July → ✓ in July.
- ❌ listen music → ✓ listen to music — don't drop the preposition.
常见错误
- ❌ Because it was raining, so we stayed home. → because 和 so 只能留一个。—— 中文"因为……所以……"成对,英语不行。
- ❌ in Monday → ✓ on Monday;❌ at July → ✓ in July。—— 天用 on,月份用 in。
- ❌ listen music → ✓ listen to music。—— 中文不带介词,英语的介词不能丢。
at, on or in? Match the time. · at、on 还是 in?把时间配对。
at + clock time, on + day, in + month / year / season. · at + 时刻,on + 某天,in + 月 / 年 / 季节。
Which sentence is correct? · 哪个句子是正确的?
One connector is enough: “…, so we stayed in.” or “Because it rained, we stayed in.” · 连接词一个就够:…, so we stayed in。或 Because it rained, we stayed in。
- Time: at (a time) → on (a day) → in (a month / year).
- Place: at (a point), in (inside), on (a surface).
- so = result; because = reason.
- 时间:at(钟点)→ on(某天)→ in(月 / 年)。
- 地点:at(某点)、in(内部)、on(表面)。
- so = 结果;because = 原因。
Write one sentence that gives a reason, using “because”. (For example: why you like something.) · 用 because 写一句话,说明一个原因。(例如:你为什么喜欢某样东西。)
Example: “I like winter because I can play in the snow.” · 例如:I like winter because I can play in the snow。