人教版英语八年级下册Unit5易混淆单词和短语辨析

unit5 易混淆单词和短语辨析。

1. 辨析：either, also, too

例：are you going to work, too? 你也去上班吗？

i didn’t come to school yesterday, either. 我昨天也没来学校。

she speaks english and she also writes english.她说英语，也写英语。

考题链接。

1). i don’t like this shirt, and i don’t like that one, _

a. too b. either c. alsod. as well

答案】b解析】四个选项均有“也”的意思，但是能够用在否定句中的只有either。

2). my friendspeaks english.

a. too b. also c. either d. yet

答案】b解析】too“也”，一般用于肯定句和疑问句，常位于句末，其前常有逗号；also“也”，用于肯定句和疑问句，位于实义动词之前，助动词、连系动词be或情态动词之后；either“也”，只用于否定句，位于句末，一般用逗号隔开；yet“尚；还”。句意：我的朋友也说英语。

2. 辨析：while, when

例：while he was walking in the park, the accident happened.

当他在公园里散步时，意外发生了。

the sun was rising when we got to the top of mountain.

当我们到达山顶时，太阳正在升起。

考题链接。

1).i was very exciting __i heard the news that the high-speed rail would be built from guangzhou to xiamen.

a. after b. when c. until d. while

答案】b解析】句意：当我听说从广州到厦门将要修高铁时，非常激动。a.

after在……之后； b. when当……时，后跟延续或非延续性动作；c. until直到，在……之前；d.

while当……时，后跟延续性动作。从语境上看，是听到消息时就兴奋，故a、c错了。hear（听到）是一个非延续性动作，前用连词when。

故选b。

2).—mike, what were your parents doing at 8:00 last night?

my mother was reading___my father was playing computer games.

a. whileb. when c. unless d. as long as

答案】a解析】试题分析：句意：―迈克，昨天晚上8：

00你父母在做什么？―当爸爸在玩电脑游戏时，我妈妈在看书。a.

while当……时；b. when当……时；c. unless 如果不，除非；d.

as long as只要；从语境可以推测出这里是“当……时”，故c、d错了。when后跟延续或非延续性动作，不进行时间对比；while后跟延续性动作，与主句进行鲜明的时间对比。本题“当爸爸在玩电脑游戏时，妈妈在看书”。

在对两人的行为进行时间对比，用while。故选a。

3. 辨析：try to do sth., try doing sth.