Unit 4 单词精讲课件2022-2023学年高中英语人教版（2019）·选择性必修第四册

单词精讲 Unit 4 1 1.jam n.果酱；堵塞 Strawberry jam 草莓酱 A traffic jam 交通堵塞 Be in a jam 陷入困境 2.Secondary adj.中学的；次要的 Secondary education中学教育 Be secondary to 从属于； 2 3. chorus n.合唱曲；合唱团 vt.合唱；齐声说 a chorus of thanks / disapproval / protest etc: 齐声的感谢/反对/抗议等 in chorus: all together; in unison 同时；一起 Never before have I heard this song sung in chorus. The professor's speech was welcomed with a chorus of praise. A chorus of applause from the audience. 3 4. uniform n.  制服；校服 adj.  一致的 uniformed  adj.  穿着制服的  uniformly  adv. 一致地 比较级：more uniform      最高级：most uniform school uniform  校服  military uniform  军装  uniform distribution  均匀分布；一致分布   Soldiers, policemen, and nurses wear uniforms. The windows in the house are all uniform. 4 5. not to mention 更不用说，且不说（= let alone） as mentioned above　如上所述 be (not) worth mentioning (不)值得一提 Don't mention it.不要客气，不用谢。 As mentioned above，the function of the device is wonderful. It's no big deal；it's not even worth mentioning. Don't mention it.You should drink some water and go to lie down. 5 6. shade vt.给……遮挡(光线)；加灯罩；把……涂暗  n.阴凉处；灯罩；阴影部分  shady adj. 成荫的；阴暗的；名声不好的;   shaded adj. 荫蔽的；色彩较暗的 ①These trees afford a pleasant shade. ②This artist uses light and shade to good effect. ③A big hat shades the eyes. (n.阴凉处) (n.阴影部分) (vt.给……遮挡(光线) 6 [知识拓展] (1) in the shade在阴凉处，阴暗处；默默无闻 put...in the shade 使黯然失色；使相形见绌 a shade of 少许，微微 (2) shade from 遮挡住  ①We were completely shaded from the sun by the poplar trees.（杨树） ②We sat down in the shade of the wall. ③A shade of doubt in her voice made me afraid. 7 wrinkle vt.& vi.[(使脸上)起皱纹；皱起 n.皱纹] wrinkled adj.有皱纹的 wrinkle (up) one's forehead 皱起额头 wrinkle with age  老得皮肤皱起 without wrinkles/a wrinkle 没有皱纹 His face was wrinkled with age. 8 ripe adj.成熟的；时机成熟的   ripely   adv.圆通地；成熟地     ripen   vt. 使成熟 Some of the apples were not quite ripe. The time was ripe to talk about peace. The problem is ripe for settlement. 比较级 riper 或 more ripe 最高级 ripest 或 most