三年級英語的重點句子主要有；
1、I like blue and pink.我喜歡藍色和粉紅色。
2、Let’s paint. 讓我們畫畫吧。
3、I have a teddy bear.我有一隻玩具熊。
4、May I have a look?我能看一下嗎？
5、Have some milk.喝些牛奶。
6、Can I have some chicken?我能吃些雞肉嗎？
7、I like French fries.我喜歡薯條。
8、Happy birthday to you. 祝你生日快樂。
9、This is for you.這是給你的。
10、Let’s eat the birthday cake.讓我們吃生日蛋糕吧。
11、What’s your name? 你叫什麼名字？
12、How old are you? 你幾歲了？
13、Where are you from? 你從哪裡來？
14、Nice to meet you .見到你真高興。
1、With the development of science and technology, there are more and more people believe that…
隨著科技的發展，越來越多的人認為…
例句：With the development of science and technology, there are more and more people believe that e-books will replace traditional books.
隨著科技的發展，越來越多的人認為電子書會取代傳統書籍。
2、Internet has been playing an increasingly important role in our daily life. It has brought a lot of benefits but has created some serious problems as well. For example,...
網際網路已在我們的生活中扮演著越來越重要的角色。它給我們帶來了許多好處，但也產生了一些嚴重的問題。
例句：Internet has been playing an increasingly important role in our daily life. It has brought a lot of benefits but has created some serious problems as well. For example, there are more and more students indulged in computer games.
網際網路已在我們的生活中扮演著越來越重要的角色。它給我們帶來了許多好處，但也產生了一些嚴重的問題。比如：越來越多的學生沉迷於電腦遊戲而無法自拔。
3、Different people have different opinions about...
不同的人對……有不同的看法。
例句：Different people have different opinions about swimming in winter.
不同的人對冬泳有不同的看法。
4、Every coin has two sides.
事物都有兩面性。
例句：Every coin has two sides. Suitable exercise is good for people’s health, but too much will be harmful.
事物都有兩面性。適當的鍛鍊有助於健康，但是過度卻會對身體有害。
5、Attitudes towards... vary from person to person.
人們對待……的態度因人而異
例句：Attitudes towards drugs vary from person to person.
人們對待吸毒的態度因人而異。
6、There is no doubt that...has its drawbacks as well as merits.
毫無疑問，……有優點也有缺點。
例句：There is no doubt that job-hopping has its drawbacks as well as merits.
毫無疑問，跳槽有優點也有缺點。
1、三年級科學上冊木頭的特點有可燃燒，可加工，不產生對人體有害的物質。
2、木頭可燃燒，即木頭與氧化劑作用發生的放熱反應，伴有火焰、發光、發煙的現象。
3、木頭可加工，木材軟硬程度適中，容易加工。
4、木頭不產生對人體有害的物質，即對人體無害。
5、木頭，漢語詞語之一，意思是砍伐後的樹木的統稱。木頭為林業主產物，對於人類生活起著很大的支援作用，根據木材不同的性質特徵，人們將它們用於不同途徑。