21、俗語說得好：“…”。

Well goes an old saying，“…”

As an old saying goes(runs， says)，“…”

An old saying goes，“…”

It's an old saying(that)子句

例︰俗話說得好：“誠實為上策”。

As an old saying goes，“Honesty is the best policy.”

22、(A)…用下列方法… in the following ways.

(B)…有三個主要理由。… for three major reasons.

(C)要…，至少我們可做三件事。To …，there are at least three things we can do.

例︰(A)我用下列方法增加信心。

I increase my confidence in the following ways.

(B)人們學外語有三個理由。

People learn a foreign language for three major reasons.

(C)為了維護健康，我們每天至少可做三件事。

To keep healthy，there are at least three things we can do every day.

23、那就是(說)…;亦即…

That is to say，…

That is，…

Namely，…

例︰我們生活需有規(guī)律。也就是說，早睡早起，戒除煙酒。

We need to live a regular life. That is，we can keep good hours and refrain from smoking and drinking in the daily activities.

24、(A)基于這個理由，… For this reason，…

(B)為了這個目的，… For this purpose，…

例︰基于這個理由，我已決定把行醫(yī)作為未來的職業(yè)。

For this reason，I have decided to take practicing medicine as my future career.

25、我們有理由相信…

We have reasons to believe (that)子句

例︰我們有理由相信體罰應該嚴格禁止。

We have reasons to believe that corporal punishment should be strictly prohibited.

26、事實上，…

As a matter of fact，…

In fact， …

例︰事實上，健康才是最重要。

As a matter of fact，it is health that counts.

27、(A)例如，… For example，…

(B)拿…做例子 Take … for example.

例︰例如，我們盲目地提高生活水準，卻降低生活品質。

For example，we elevate the living standards blindly，but lower the quality of life.

28、此外，我們不應忽視…

Besides (In addition)，we should not neglect …

例︰此外，我們不應忽視每個人都想要一個溫馨祥和的社會。

In addition，we should not neglect that everyone wants a friendly and peaceful society.

29、相反地，…

on the contrary， …

by contrast， …

例︰相反地，少數(shù)學生似乎還在鬼混。

On the contrary，a few students，it seems，are still fooling around.

30、另一方面，…

on the other hand， …

例︰政府應嚴格執(zhí)法，另一方面，大眾也應該培養(yǎng)減少污染的好習慣。

The government should enforce laws strictly. On the other hand，the public also should develop the good habit of reducing pollution.