Ten minus two is eight.十减二等于八。

Light travels faster than sound.光的速度比声音的速度快。

The United States lies by the west coast of the Pacific Ocean.美国位于太平洋西岸。

4.根据英文语法规定，当主句的谓语动词是一般将来时，那么时间或条件状语从句的谓语动词只能用一般现在时来表示将来要发生的动作。

例如：

I'll tell him the news when he comes back.他回来时，我将告诉他这个消息。

If you take the job,they will talk with you in greater details.

如果你接受这份工作，他们将和你谈谈细节。

2.一般现在时常和表示时间的频度副词连用。如：often,usually,sometimes,always,never等。例如：

1.I often read books in the evening.

我经常在晚上读书。

2.Do they usually go to school by bike?

他们通常骑自行车去上学吗？

3.He doesn’t like milk.He never drinks it.

他不喜欢牛奶。他从来不喝它。

4.Sometimes my mother gets back at five.

有时候妈妈五点钟回来。

3.一般现在时也常和以下时间表达法连用。如：in the morning,in the afternoon,in the evening,at noon,at night,every day,on Sunday(s),at seven等。例如：

Do they have math in the morning?

他们早上有数学课吗？

She sleeps nine hours every night.

她每晚睡九个小时。

It takes me two hours to do my homework every day.

每天写作业花费我两个小时的时间。

They don’t have classes on Sundays.

他们周日不上课。

动词第三人称单数的构成

1.动词原形后面直接加-s

look—looks

read—reads

play—plays

stop—stops

2.在以字母s,x,ch,sh,o结尾的动词后加-es

miss—misses

fix—fixes

watch—watches

wash—washes

go—goes

do—does

3.辅音字母加y结尾的动词变y为i，再加-es